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The key to scoring high in CBSE class 12 Board Exams is to practice, practice and practice. Once you have studied all the chapters and revised your concepts, you need to find out as many question papers for exam prep as possible, and get down to testing your exam preparedness. You should be mindful of your time management and ability to solve questions of different difficulty levels. Extramarks makes it possible. You can find ample questions papers for CBSE Class 12, which can help a great deal is helping ease off the exam nervousness.
(One in a series of related and sequential images)
I decided to convert this magnetically-operated Pulsar Ladies’ Cushion-shaped wrist watch (Model 2407-2) over to Touch Command in operation.
I settled on this route as that the module that came with the watch was damaged by battery corrosion, and I chose not to send it out for rebuilding.
I purchased some new-old-stock Pulsar 801 modules from an enormously helpful, former owner of a Pulsar repair facility, with the hope that I could retrofit one of those 801 modules, to this Model 2407-2 watch.
Due to the 801 module’s design, its LED display is situated higher in the Time Screen than the original display was, but this is fine.
I removed the original module and the two original, magnetic-type Command Buttons from the watch.
I decided to make new and fixed-in-position, capacitance-enabled buttons that would utilize (but not alter) the existing holes for buttons in the watchcase.
In so doing, I have preserved the ability to switch back to a magnetically-operated watch in the future, should ever I decide to.
I no longer have the access to materials and tools like I used to, so I obtained my button-making stock from the tangs of a stainless steel, steak-carving fork.
I carved and fitted these replacement buttons by hand, using the tools that I have available to me at this point in time.
The buttons are seen semi-finished in images where they are not mounted.
These buttons are now potted in epoxy, so not much effort was exerted to finish the circumferential profile of them to a high level.
Ultimately, the crown of them was finished consistent with the finish of the watch case.
The recipient watch was manufactured in approximately late 1974 and early 1975 and I decided to leave some of the ‘honest wear’ in the restored watchcase.
Each button makes the mechanical and electrical connection of a copper wire, via two tabs that were crimped over the wire like a solderless connector would be.
These copper wires were then shaped to make contact with the new module’s contacts for the time and the date functions.
Both of the copper wires loop in different directions, with one being open at the top and one being closed at the top.
This was done so that the module’s bushing could be swung into place over the contacts.
The bushing hooked under the 12 o’clock contact, and swung over the 6 o’clock one.
The bushing was needed due to the smaller outside diameter of the 801 Module in a watchcase that wasn’t intended for it.
The bushing was made from the plunger cap of a medical syringe.
I made a new battery strap for the 801 module as that the batteries have a different size and layout from the original module.
I use 393/309 batteries with this 801 module.
A wealth of information regarding such Pulsar watches can be found at this site:
YSX321SL
PARAMETERS:
1. Frequency range: 8-54MHz
2. SMD/SMT crystal unit, 4 pin 3225 type
3. Excellent for reducing EMI effect
4. High precision and frequency stability
5. Customize service is supported
6. Normal load capacitance: 8pf/9pf/12pf/18pf/20pf
7. Normal temperature: -40~+85℃
8. Standard frequency tolerance: ±10PPM
9. Applications: Mobile phone, Bluetooth, W-LAN ISM band radio
YSX321SL
PARAMETERS:
1. Frequency range: 8-54MHz
2. SMD/SMT crystal unit, 4 pin 3225 type
3. Excellent for reducing EMI effect
4. High precision and frequency stability
5. Customize service is supported
6. Normal load capacitance: 8pf/9pf/12pf/18pf/20pf
7. Normal temperature: -40~+85℃
8. Standard frequency tolerance: ±10PPM
9. Applications: Mobile phone, Bluetooth, W-LAN ISM band radio
(One in a series of related and sequential images)
I decided to convert this magnetically-operated Pulsar Ladies’ Cushion-shaped wrist watch (Model 2407-2) over to Touch Command in operation.
I settled on this route as that the module that came with the watch was damaged by battery corrosion, and I chose not to send it out for rebuilding.
I purchased some new-old-stock Pulsar 801 modules from an enormously helpful, former owner of a Pulsar repair facility, with the hope that I could retrofit one of those 801 modules, to this Model 2407-2 watch.
Due to the 801 module’s design, its LED display is situated higher in the Time Screen than the original display was, but this is fine.
I removed the original module and the two original, magnetic-type Command Buttons from the watch.
I decided to make new and fixed-in-position, capacitance-enabled buttons that would utilize (but not alter) the existing holes for buttons in the watchcase.
In so doing, I have preserved the ability to switch back to a magnetically-operated watch in the future, should ever I decide to.
I no longer have the access to materials and tools like I used to, so I obtained my button-making stock from the tangs of a stainless steel, steak-carving fork.
I carved and fitted these replacement buttons by hand, using the tools that I have available to me at this point in time.
The buttons are seen semi-finished in images where they are not mounted.
These buttons are now potted in epoxy, so not much effort was exerted to finish the circumferential profile of them to a high level.
Ultimately, the crown of them was finished consistent with the finish of the watch case.
The recipient watch was manufactured in approximately late 1974 and early 1975 and I decided to leave some of the ‘honest wear’ in the restored watchcase.
Each button makes the mechanical and electrical connection of a copper wire, via two tabs that were crimped over the wire like a solderless connector would be.
These copper wires were then shaped to make contact with the new module’s contacts for the time and the date functions.
Both of the copper wires loop in different directions, with one being open at the top and one being closed at the top.
This was done so that the module’s bushing could be swung into place over the contacts.
The bushing hooked under the 12 o’clock contact, and swung over the 6 o’clock one.
The bushing was needed due to the smaller outside diameter of the 801 Module in a watchcase that wasn’t intended for it.
The bushing was made from the plunger cap of a medical syringe.
I made a new battery strap for the 801 module as that the batteries have a different size and layout from the original module.
I use 393/309 batteries with this 801 module.
A wealth of information regarding such Pulsar watches can be found at this site:
(One in a series of related and sequential images)
I decided to convert this magnetically-operated Pulsar Ladies’ Cushion-shaped wrist watch (Model 2407-2) over to Touch Command in operation.
I settled on this route as that the module that came with the watch was damaged by battery corrosion, and I chose not to send it out for rebuilding.
I purchased some new-old-stock Pulsar 801 modules from an enormously helpful, former owner of a Pulsar repair facility, with the hope that I could retrofit one of those 801 modules, to this Model 2407-2 watch.
Due to the 801 module’s design, its LED display is situated higher in the Time Screen than the original display was, but this is fine.
I removed the original module and the two original, magnetic-type Command Buttons from the watch.
I decided to make new and fixed-in-position, capacitance-enabled buttons that would utilize (but not alter) the existing holes for buttons in the watchcase.
In so doing, I have preserved the ability to switch back to a magnetically-operated watch in the future, should ever I decide to.
I no longer have the access to materials and tools like I used to, so I obtained my button-making stock from the tangs of a stainless steel, steak-carving fork.
I carved and fitted these replacement buttons by hand, using the tools that I have available to me at this point in time.
The buttons are seen semi-finished in images where they are not mounted.
These buttons are now potted in epoxy, so not much effort was exerted to finish the circumferential profile of them to a high level.
Ultimately, the crown of them was finished consistent with the finish of the watch case.
The recipient watch was manufactured in approximately late 1974 and early 1975 and I decided to leave some of the ‘honest wear’ in the restored watchcase.
Each button makes the mechanical and electrical connection of a copper wire, via two tabs that were crimped over the wire like a solderless connector would be.
These copper wires were then shaped to make contact with the new module’s contacts for the time and the date functions.
Both of the copper wires loop in different directions, with one being open at the top and one being closed at the top.
This was done so that the module’s bushing could be swung into place over the contacts.
The bushing hooked under the 12 o’clock contact, and swung over the 6 o’clock one.
The bushing was needed due to the smaller outside diameter of the 801 Module in a watchcase that wasn’t intended for it.
The bushing was made from the plunger cap of a medical syringe.
I made a new battery strap for the 801 module as that the batteries have a different size and layout from the original module.
I use 393/309 batteries with this 801 module.
A wealth of information regarding such Pulsar watches can be found at this site:
(One in a series of related and sequential images)
I decided to convert this magnetically-operated Pulsar Ladies’ Cushion-shaped wrist watch (Model 2407-2) over to Touch Command in operation.
I settled on this route as that the module that came with the watch was damaged by battery corrosion, and I chose not to send it out for rebuilding.
I purchased some new-old-stock Pulsar 801 modules from an enormously helpful, former owner of a Pulsar repair facility, with the hope that I could retrofit one of those 801 modules, to this Model 2407-2 watch.
Due to the 801 module’s design, its LED display is situated higher in the Time Screen than the original display was, but this is fine.
I removed the original module and the two original, magnetic-type Command Buttons from the watch.
I decided to make new and fixed-in-position, capacitance-enabled buttons that would utilize (but not alter) the existing holes for buttons in the watchcase.
In so doing, I have preserved the ability to switch back to a magnetically-operated watch in the future, should ever I decide to.
I no longer have the access to materials and tools like I used to, so I obtained my button-making stock from the tangs of a stainless steel, steak-carving fork.
I carved and fitted these replacement buttons by hand, using the tools that I have available to me at this point in time.
The buttons are seen semi-finished in images where they are not mounted.
These buttons are now potted in epoxy, so not much effort was exerted to finish the circumferential profile of them to a high level.
Ultimately, the crown of them was finished consistent with the finish of the watch case.
The recipient watch was manufactured in approximately late 1974 and early 1975 and I decided to leave some of the ‘honest wear’ in the restored watchcase.
Each button makes the mechanical and electrical connection of a copper wire, via two tabs that were crimped over the wire like a solderless connector would be.
These copper wires were then shaped to make contact with the new module’s contacts for the time and the date functions.
Both of the copper wires loop in different directions, with one being open at the top and one being closed at the top.
This was done so that the module’s bushing could be swung into place over the contacts.
The bushing hooked under the 12 o’clock contact, and swung over the 6 o’clock one.
The bushing was needed due to the smaller outside diameter of the 801 Module in a watchcase that wasn’t intended for it.
The bushing was made from the plunger cap of a medical syringe.
I made a new battery strap for the 801 module as that the batteries have a different size and layout from the original module.
I use 393/309 batteries with this 801 module.
A wealth of information regarding such Pulsar watches can be found at this site:
(One in a series of related and sequential images)
I decided to convert a magnetically-operated Pulsar Ladies’ Cushion-shaped wrist watch (Model 2407-2) over to Touch Command in operation.
I settled on this route as that the module that came with the watch was damaged by battery corrosion, and I chose not to send it out for rebuilding.
I purchased some new-old-stock Pulsar 801 modules from an enormously helpful, former owner of a Pulsar repair facility, with the hope that I could retrofit one of those 801 modules, to this Model 2407-2 watch.
Due to the 801 module’s design, its LED display is situated higher in the Time Screen than the watch’s original display was, but this is fine.
I removed the original module and the two original, magnetic-type Command Buttons from the watch.
I decided to make new and fixed-in-position, capacitance-enabled buttons that would utilize (but not alter) the existing holes for buttons in the watchcase.
In so doing, I have preserved the ability to switch back to a magnetically-operated watch in the future, should ever I decide to.
I no longer have the access to materials and tools like I used to, so I obtained my button-making stock from the tangs of a stainless steel, steak-carving fork.
I carved and fitted these replacement buttons by hand, using the tools that I have available to me at this point in time.
In images where the buttons are not mounted, they are seen only semi-finished.
These buttons were ultimately potted in epoxy, so not much effort was exerted to finish the circumferential profile of them to a high level.
Only the crown of the buttons, received a finish relatively consistent with the finish of the watch case.
This watch was manufactured in approximately late 1974 thru early 1975, and I decided to leave some of the ‘honest wear’ in the restored watchcase.
Each button makes the mechanical and electrical connection of a copper wire, via two tabs that were crimped over the wire like a solderless connector would be.
These copper wires were then shaped to make contact with the new module’s contacts for the time and the date functions.
Both of the copper wires loop in different directions, with one being open at the top and one being closed at the top.
This was done so that the module’s bushing could be swung into place over the contacts.
The bushing hooked under the 12 o’clock contact, and swung over the 6 o’clock one.
The bushing was needed due to the smaller outside diameter of the 801 Module in a watchcase that wasn’t intended for it.
The bushing was made from the plunger cap of a medical syringe.
I made a new battery strap for the 801 module as that the batteries have a different size and layout from the original module.
I use 393/309 batteries with this 801 module.
A wealth of information regarding such Pulsar watches can be found at this site:
Senior Design Team ECET
Matthew K. , Wesley S.
Light: Front Left
Book Text: Resistince is Futile, but Capacitance Has Potential
Capacitive sensing is a technology based on capacitive coupling which takes input as human body capacitance. This technology is used in a capacitive keyboard also known as Touch sense keyboard or capacitive sensing keyboard. A capacitive keyboard is a type of computer keyboard that uses a change of capacitance on the capacitor pad.
The working of capacitive keyboard is similar to that of a typical touch screen smartphone. When we touch the screen, a small electrical charge is transferred from our body to this switch. This causes a change in the capacitance. The switch then detects this change and responds with an appropriate command.
Backlighting on the glass provides capacitive sensing keyboards a beautiful and aesthetically appealing appearance with strong graphic clarity. Capacitive touch control switches do not require the user to touch the metal directly as a printed glass is placed on the PCB which can eliminate potential safety hazard. As it has no mechanical components, it doesn’t wear out easily and has a long lifespan. Capsense keyboard can be used where hand-hygiene is important as these keyboards are also easy to clean using disinfectants and thus reduces the risk of cross contamination.
YSX321SL
PARAMETERS:
1. Frequency range: 8-54MHz
2. SMD/SMT crystal unit, 4 pin 3225 type
3. Excellent for reducing EMI effect
4. High precision and frequency stability
5. Customize service is supported
6. Normal load capacitance: 8pf/9pf/12pf/18pf/20pf
7. Normal temperature: -40~+85℃
8. Standard frequency tolerance: ±10PPM
9. Applications: Mobile phone, Bluetooth, W-LAN ISM band radio
HC-49SMD CRYSTAL UNITS for Frequency control timing devices
PARAMETERS:
1. SMD/SMT crystal unit, 2 pin type
2. Highly mass production capability
3. A great number of standard frequencies
4. Customize service is supported
5. Normal load capacitance: 20pf
6. Normal temperature: -20~+70℃
7. Standard frequency tolerance: ±20PPM
8. Applications: PC, STB, LCDM, and Cable Modem
Lynn Zheng/Overseas sale
SHENZHEN YANGXING TECHNOLOGY CO., LTD
QQ: 3003161286 / Wechat: star665121
Whatsapp: 0086-18565837236
Skype: live:yxcxtal123
E-mail: zxl@yangxing.hk
Website: www.yxcxtal.com
The FCX-All differential pressure (flow) transmitter accurately measure differential pressure, liquid level, gauge pressure or flow rate and transmitter a proportional 4 to 20 mA signal.
The transmitter utilizes a unique micro machined capacitance silicon sensor with state-of-the-art microprocessor technology to provide exceptional performance and functionality.
"Industrial equipment supplier since 1998" Supplier and Traders of Pressure, Temperature and Flow Measurement Instruments and Regulators in Noida, Delhi NCR, India : See Automation & Engineers
For More Information visit on:- www.seeautomation.com
Our Mail I.D:- sales@seeautomation.com
Contact Us:- +91-11-22012324
The outcome of a capacitor is known as capacitance. A capacitor is a small device that is commonly used to stores electrical energy in an electric field. It is a passive two-terminal electrical component with two terminals that varies with its forms. As a reputed online store, MEBA provides wide range of top quality capacitors at the best pricing range such as a long life motor capacitor, voltage capacitors, electrolytic capacitor, electrical condenser, etc. Our highly designed products are backed by a warranty. www.mebamcb.com/product/electrical-accessories/capacitor
RF Capacitance Level Switch is designed to provide accurate and reliable point level (High and Low Level) information of Solids (Powders and Lumps), Liquids and Slurry stored in vessels and tanks. The electronics consist of an oscillator,adetector and an output relay which is controlled by the detector.The probe contains an active section and a shield section insulated from each other and from the vessel ground. Most conventional sensors give a false indication when coated due to build up. EIP Level Sensors are designed to ignore any such build-up or coating.
For more details: eipenviroindia.com/rf-capacitance-level-switch/
(One in a series of related and sequential images)
I decided to convert this magnetically-operated Pulsar Ladies’ Cushion-shaped wrist watch (Model 2407-2) over to Touch Command in operation.
I settled on this route as that the module that came with the watch was damaged by battery corrosion, and I chose not to send it out for rebuilding.
I purchased some new-old-stock Pulsar 801 modules from an enormously helpful, former owner of a Pulsar repair facility, with the hope that I could retrofit one of those 801 modules, to this Model 2407-2 watch.
Due to the 801 module’s design, its LED display is situated higher in the Time Screen than the original display was, but this is fine.
I removed the original module and the two original, magnetic-type Command Buttons from the watch.
I decided to make new and fixed-in-position, capacitance-enabled buttons that would utilize (but not alter) the existing holes for buttons in the watchcase.
In so doing, I have preserved the ability to switch back to a magnetically-operated watch in the future, should ever I decide to.
I no longer have the access to materials and tools like I used to, so I obtained my button-making stock from the tangs of a stainless steel, steak-carving fork.
I carved and fitted these replacement buttons by hand, using the tools that I have available to me at this point in time.
The buttons are seen semi-finished in images where they are not mounted.
These buttons are now potted in epoxy, so not much effort was exerted to finish the circumferential profile of them to a high level.
Ultimately, the crown of them was finished consistent with the finish of the watch case.
The recipient watch was manufactured in approximately late 1974 and early 1975 and I decided to leave some of the ‘honest wear’ in the restored watchcase.
Each button makes the mechanical and electrical connection of a copper wire, via two tabs that were crimped over the wire like a solderless connector would be.
These copper wires were then shaped to make contact with the new module’s contacts for the time and the date functions.
Both of the copper wires loop in different directions, with one being open at the top and one being closed at the top.
This was done so that the module’s bushing could be swung into place over the contacts.
The bushing hooked under the 12 o’clock contact, and swung over the 6 o’clock one.
The bushing was needed due to the smaller outside diameter of the 801 Module in a watchcase that wasn’t intended for it.
The bushing was made from the plunger cap of a medical syringe.
I made a new battery strap for the 801 module as that the batteries have a different size and layout from the original module.
I use 393/309 batteries with this 801 module.
A wealth of information regarding such Pulsar watches can be found at this site:
(One in a series of related and sequential images)
I decided to convert this magnetically-operated Pulsar Ladies’ Cushion-shaped wrist watch (Model 2407-2) over to Touch Command in operation.
I settled on this route as that the module that came with the watch was damaged by battery corrosion, and I chose not to send it out for rebuilding.
I purchased some new-old-stock Pulsar 801 modules from an enormously helpful, former owner of a Pulsar repair facility, with the hope that I could retrofit one of those 801 modules, to this Model 2407-2 watch.
Due to the 801 module’s design, its LED display is situated higher in the Time Screen than the original display was, but this is fine.
I removed the original module and the two original, magnetic-type Command Buttons from the watch.
I decided to make new and fixed-in-position, capacitance-enabled buttons that would utilize (but not alter) the existing holes for buttons in the watchcase.
In so doing, I have preserved the ability to switch back to a magnetically-operated watch in the future, should ever I decide to.
I no longer have the access to materials and tools like I used to, so I obtained my button-making stock from the tangs of a stainless steel, steak-carving fork.
I carved and fitted these replacement buttons by hand, using the tools that I have available to me at this point in time.
The buttons are seen semi-finished in images where they are not mounted.
These buttons are now potted in epoxy, so not much effort was exerted to finish the circumferential profile of them to a high level.
Ultimately, the crown of them was finished consistent with the finish of the watch case.
The recipient watch was manufactured in approximately late 1974 and early 1975 and I decided to leave some of the ‘honest wear’ in the restored watchcase.
Each button makes the mechanical and electrical connection of a copper wire, via two tabs that were crimped over the wire like a solderless connector would be.
These copper wires were then shaped to make contact with the new module’s contacts for the time and the date functions.
Both of the copper wires loop in different directions, with one being open at the top and one being closed at the top.
This was done so that the module’s bushing could be swung into place over the contacts.
The bushing hooked under the 12 o’clock contact, and swung over the 6 o’clock one.
The bushing was needed due to the smaller outside diameter of the 801 Module in a watchcase that wasn’t intended for it.
The bushing was made from the plunger cap of a medical syringe.
I made a new battery strap for the 801 module as that the batteries have a different size and layout from the original module.
I use 393/309 batteries with this 801 module.
A wealth of information regarding such Pulsar watches can be found at this site:
YSX321SL
PARAMETERS:
1. Frequency range: 8-54MHz
2. SMD/SMT crystal unit, 4 pin 3225 type
3. Excellent for reducing EMI effect
4. High precision and frequency stability
5. Customize service is supported
6. Normal load capacitance: 8pf/9pf/12pf/18pf/20pf
7. Normal temperature: -40~+85℃
8. Standard frequency tolerance: ±10PPM
9. Applications: Mobile phone, Bluetooth, W-LAN ISM band radio
(One in a series of related and sequential images)
I decided to convert this magnetically-operated Pulsar Ladies’ Cushion-shaped wrist watch (Model 2407-2) over to Touch Command in operation.
I settled on this route as that the module that came with the watch was damaged by battery corrosion, and I chose not to send it out for rebuilding.
I purchased some new-old-stock Pulsar 801 modules from an enormously helpful, former owner of a Pulsar repair facility, with the hope that I could retrofit one of those 801 modules, to this Model 2407-2 watch.
Due to the 801 module’s design, its LED display is situated higher in the Time Screen than the original display was, but this is fine.
I removed the original module and the two original, magnetic-type Command Buttons from the watch.
I decided to make new and fixed-in-position, capacitance-enabled buttons that would utilize (but not alter) the existing holes for buttons in the watchcase.
In so doing, I have preserved the ability to switch back to a magnetically-operated watch in the future, should ever I decide to.
I no longer have the access to materials and tools like I used to, so I obtained my button-making stock from the tangs of a stainless steel, steak-carving fork.
I carved and fitted these replacement buttons by hand, using the tools that I have available to me at this point in time.
The buttons are seen semi-finished in images where they are not mounted.
These buttons are now potted in epoxy, so not much effort was exerted to finish the circumferential profile of them to a high level.
Ultimately, the crown of them was finished consistent with the finish of the watch case.
The recipient watch was manufactured in approximately late 1974 and early 1975 and I decided to leave some of the ‘honest wear’ in the restored watchcase.
Each button makes the mechanical and electrical connection of a copper wire, via two tabs that were crimped over the wire like a solderless connector would be.
These copper wires were then shaped to make contact with the new module’s contacts for the time and the date functions.
Both of the copper wires loop in different directions, with one being open at the top and one being closed at the top.
This was done so that the module’s bushing could be swung into place over the contacts.
The bushing hooked under the 12 o’clock contact, and swung over the 6 o’clock one.
The bushing was needed due to the smaller outside diameter of the 801 Module in a watchcase that wasn’t intended for it.
The bushing was made from the plunger cap of a medical syringe.
I made a new battery strap for the 801 module as that the batteries have a different size and layout from the original module.
I use 393/309 batteries with this 801 module.
A wealth of information regarding such Pulsar watches can be found at this site:
(One in a series of related and sequential images)
I decided to convert this magnetically-operated Pulsar Ladies’ Cushion-shaped wrist watch (Model 2407-2) over to Touch Command in operation.
I settled on this route as that the module that came with the watch was damaged by battery corrosion, and I chose not to send it out for rebuilding.
I purchased some new-old-stock Pulsar 801 modules from an enormously helpful, former owner of a Pulsar repair facility, with the hope that I could retrofit one of those 801 modules, to this Model 2407-2 watch.
Due to the 801 module’s design, its LED display is situated higher in the Time Screen than the original display was, but this is fine.
I removed the original module and the two original, magnetic-type Command Buttons from the watch.
I decided to make new and fixed-in-position, capacitance-enabled buttons that would utilize (but not alter) the existing holes for buttons in the watchcase.
In so doing, I have preserved the ability to switch back to a magnetically-operated watch in the future, should ever I decide to.
I no longer have the access to materials and tools like I used to, so I obtained my button-making stock from the tangs of a stainless steel, steak-carving fork.
I carved and fitted these replacement buttons by hand, using the tools that I have available to me at this point in time.
The buttons are seen semi-finished in images where they are not mounted.
These buttons are now potted in epoxy, so not much effort was exerted to finish the circumferential profile of them to a high level.
Ultimately, the crown of them was finished consistent with the finish of the watch case.
The recipient watch was manufactured in approximately late 1974 and early 1975 and I decided to leave some of the ‘honest wear’ in the restored watchcase.
Each button makes the mechanical and electrical connection of a copper wire, via two tabs that were crimped over the wire like a solderless connector would be.
These copper wires were then shaped to make contact with the new module’s contacts for the time and the date functions.
Both of the copper wires loop in different directions, with one being open at the top and one being closed at the top.
This was done so that the module’s bushing could be swung into place over the contacts.
The bushing hooked under the 12 o’clock contact, and swung over the 6 o’clock one.
The bushing was needed due to the smaller outside diameter of the 801 Module in a watchcase that wasn’t intended for it.
The bushing was made from the plunger cap of a medical syringe.
I made a new battery strap for the 801 module as that the batteries have a different size and layout from the original module.
I use 393/309 batteries with this 801 module.
A wealth of information regarding such Pulsar watches can be found at this site:
YSX321SL
PARAMETERS:
1. Frequency range: 8-54MHz
2. SMD/SMT crystal unit, 4 pin 3225 type
3. Excellent for reducing EMI effect
4. High precision and frequency stability
5. Customize service is supported
6. Normal load capacitance: 8pf/9pf/12pf/18pf/20pf
7. Normal temperature: -40~+85℃
8. Standard frequency tolerance: ±10PPM
9. Applications: Mobile phone, Bluetooth, W-LAN ISM band radio
HC-49SMD CRYSTAL UNITS for Frequency control timing devices
PARAMETERS:
1. SMD/SMT crystal unit, 2 pin type
2. Highly mass production capability
3. A great number of standard frequencies
4. Customize service is supported
5. Normal load capacitance: 20pf
6. Normal temperature: -20~+70℃
7. Standard frequency tolerance: ±20PPM
8. Applications: PC, STB, LCDM, and Cable Modem
Lynn Zheng/Overseas sale
SHENZHEN YANGXING TECHNOLOGY CO., LTD
QQ: 3003161286 / Wechat: star665121
Whatsapp: 0086-18565837236
Skype: live:yxcxtal123
E-mail: zxl@yangxing.hk
Website: www.yxcxtal.com
HC-49SMD CRYSTAL UNITS for Frequency control timing devices
PARAMETERS:
1. SMD/SMT crystal unit, 2 pin type
2. Highly mass production capability
3. A great number of standard frequencies
4. Customize service is supported
5. Normal load capacitance: 20pf
6. Normal temperature: -20~+70℃
7. Standard frequency tolerance: ±20PPM
8. Applications: PC, STB, LCDM, and Cable Modem
Lynn Zheng/Overseas sale
SHENZHEN YANGXING TECHNOLOGY CO., LTD
QQ: 3003161286 / Wechat: star665121
Whatsapp: 0086-18565837236
Skype: live:yxcxtal123
E-mail: zxl@yangxing.hk
Website: www.yxcxtal.com
YSX321SL
PARAMETERS:
1. Frequency range: 8-54MHz
2. SMD/SMT crystal unit, 4 pin 3225 type
3. Excellent for reducing EMI effect
4. High precision and frequency stability
5. Customize service is supported
6. Normal load capacitance: 8pf/9pf/12pf/18pf/20pf
7. Normal temperature: -40~+85℃
8. Standard frequency tolerance: ±10PPM
9. Applications: Mobile phone, Bluetooth, W-LAN ISM band radio
YSX321SL
PARAMETERS:
1. Frequency range: 8-54MHz
2. SMD/SMT crystal unit, 4 pin 3225 type
3. Excellent for reducing EMI effect
4. High precision and frequency stability
5. Customize service is supported
6. Normal load capacitance: 8pf/9pf/12pf/18pf/20pf
7. Normal temperature: -40~+85℃
8. Standard frequency tolerance: ±10PPM
9. Applications: Mobile phone, Bluetooth, W-LAN ISM band radio
Students collecting data to determine the relationship between the Capacitance of a capacitor with the thickness of the dielectric inside. Also, they experimentally determine the electric permittivity of the dielectric.
Students collecting data to determine the relationship between the Capacitance of a capacitor with the thickness of the dielectric inside. Also, they experimentally determine the electric permittivity of the dielectric.
Starbright Electrolytic Capacitors to reduce voltage fluctuations in various filtering devices and are extensively used for noise filtering or decoupling in power supplies. These capacitors are an optimum quality capacitors and offer a large capacitance range with voltages. For more info & inquiry please visit us @ bit.ly/2TxODmP
YSX321SL
PARAMETERS:
1. Frequency range: 8-54MHz
2. SMD/SMT crystal unit, 4 pin 3225 type
3. Excellent for reducing EMI effect
4. High precision and frequency stability
5. Customize service is supported
6. Normal load capacitance: 8pf/9pf/12pf/18pf/20pf
7. Normal temperature: -40~+85℃
8. Standard frequency tolerance: ±10PPM
9. Applications: Mobile phone, Bluetooth, W-LAN ISM band radio
A Capacitor is an electric component formed by two electrical conductors separated by an insulating material. Multilayer ceramic capacitor (MLCC) consists a number of layers of ceramic inner electrodes in a sandwich structure. MLCC is a surface-mounted device (SMD) capacitor, which is used in a wide range of capacitance applications such as telecommunications, data processing, PCs, hard disks, game PCs, DVDs, video cameras, mobile phones, general electronic circuits, and others.
HC-49SMD CRYSTAL UNITS for Frequency control timing devices
PARAMETERS:
1. SMD/SMT crystal unit, 2 pin type
2. Highly mass production capability
3. A great number of standard frequencies
4. Customize service is supported
5. Normal load capacitance: 20pf
6. Normal temperature: -20~+70℃
7. Standard frequency tolerance: ±20PPM
8. Applications: PC, STB, LCDM, and Cable Modem
Lynn Zheng/Overseas sale
SHENZHEN YANGXING TECHNOLOGY CO., LTD
QQ: 3003161286 / Wechat: star665121
Whatsapp: 0086-18565837236
Skype: live:yxcxtal123
E-mail: zxl@yangxing.hk
Website: www.yxcxtal.com
YSX321SL
PARAMETERS:
1. Frequency range: 8-54MHz
2. SMD/SMT crystal unit, 4 pin 3225 type
3. Excellent for reducing EMI effect
4. High precision and frequency stability
5. Customize service is supported
6. Normal load capacitance: 8pf/9pf/12pf/18pf/20pf
7. Normal temperature: -40~+85℃
8. Standard frequency tolerance: ±10PPM
9. Applications: Mobile phone, Bluetooth, W-LAN ISM band radio
Students collecting data to determine the relationship between the Capacitance of a capacitor with the thickness of the dielectric inside. Also, they experimentally determine the electric permittivity of the dielectric.
EMS assembly manufacturing services offer by Hitech Circuits who specialize in the entire range of printed circuit board assembly services. If you are looking for a reliable partner on EMS assembly manufacturing contact Hitech right now.
Email: sales12@hitechpcb.com
Hitech Circuits PCB Assembly Services
Starting from prototyping to large-volume production, Hitech Circuits offers a broad range of printed circuit board manufacturing and assembly services. Our PCB assembly services include:
Prototyping Services
New Product Introduction Services
Supply Chain Management
Assembling a wide range of printed circuit boards
BGA Reworking
Conformal Coating
Automated Optical Inspection
X-Ray Inspection
In-Circuit Testing
Flying Probe Testing
Hitech Circuits Supply Chain Management Services
To make it easier for our customers, Hitech Circuits also offers several types of supply chain management services. These include:
Quickturn Prototype Services
Full Turnkey Services
Semi-Turnkey Material Handling Services
Consignment Services
Large Volume Production Services
Basic Steps of PCBA Design
The design of a PCBA involves several critical steps to ensure the final product functions correctly. These steps include:
1. Schematic Design
2. Bill of Materials (BOM)
3. PCB Layout Design
4. Simulation and Testing
5. Design for Manufacturability (DFM)
PCBA Fabrication
1. PCB Manufacturing
2. Solder Paste Application
3. Component Placement
4. Reflow Soldering
5. Inspection and Quality Control
6. Through-Hole Component Insertion and Soldering
PCBA Testing
1. In-Circuit Testing (ICT)
This will test each component on the circuit board to ensure that they are placed and operating correctly. It checks for short circuits, open circuits, resistance, capacitance and other basic parameters.
2. Functional Testing
This tests the complete PCBA to ensure it operates correctly under real-world conditions. It verifies that the board performs its intended functions.
3. Burn-In Testing
This includes operating the PCBA for long periods under high temperatures and pressures to identify any early faults and ensure reliability.
4. Environmental Testing
To ensure that the PCBA can withstand various environmental conditions during actual use, such as humidity, temperature cycling, vibration, etc.
Our rapid prototyping service enables your R&D department to quickly evaluate their designs. We also offer assistance during the design process through DFA and DFM services. This not only helps you complete the design quickly, but also shortens the time to market, thereby helping you defeat your competitors.
We help customers offload the entire procurement and assembly process through a full turnkey service. You don't have to search for components, order them, track deliveries, and handle obsolgations - rush PCB takes care of all of this for you. We have connections with major component distributors and can assist with the logistics of procurement and supply.
Why Hitech Circuits for PCB Assembly?
If you have any requirement for fabrication of printed circuit boards and assembling them, you will find the single-window solution offered by Hitech Circuits the most economical in terms of quality, cost, and time. Our state-of-the-art machinery and well-qualified personnel guarantee that you will get the best quality, workmanship, and reliability for all your products we manufacture and assemble for you.
You can obtain a PCB & PCB-Assembly or Full Turnkey quote by emailing us your Gerbers & BOM for RFQ.
To contact our PCBA team or request more information about PCB services, please email us at sales12@hitechpcb.com or call us at 18033052358
YSX321SL
PARAMETERS:
1. Frequency range: 8-54MHz
2. SMD/SMT crystal unit, 4 pin 3225 type
3. Excellent for reducing EMI effect
4. High precision and frequency stability
5. Customize service is supported
6. Normal load capacitance: 8pf/9pf/12pf/18pf/20pf
7. Normal temperature: -40~+85℃
8. Standard frequency tolerance: ±10PPM
9. Applications: Mobile phone, Bluetooth, W-LAN ISM band radio
Gems™ SensorsDifferential Pressure Sensor & Transducer - 830 Seriesis designed for wet-to-wet differential pressure measurements of liquids or gases. These units feature bleed ports that allow for total elimination of air in the line and pressure cavities. These are best suited for applications like Energy Management Systems, Filter Monitoring, Liquid Level Management etc.
YSX321SL
PARAMETERS:
1. Frequency range: 8-54MHz
2. SMD/SMT crystal unit, 4 pin 3225 type
3. Excellent for reducing EMI effect
4. High precision and frequency stability
5. Customize service is supported
6. Normal load capacitance: 8pf/9pf/12pf/18pf/20pf
7. Normal temperature: -40~+85℃
8. Standard frequency tolerance: ±10PPM
9. Applications: Mobile phone, Bluetooth, W-LAN ISM band radio
These are the new capacitors. They are rated a little higher in both capacitance and voltage, but are significantly physically smaller than the ones that are being replaced. These are Panasonics, bought from Mouser Electronics. About $10 for the pair. Note that the gray band with the open box graphics are to designate the negative pin of the cap.