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These prints made as part of the Circuit Portraits project (blog.circuitportraits.com/ and shop: www.circuitportraits.com/). Design is taken from a genuine Issue One circuit board from the first generation of Sinclair ZX Spectrum, made in 1982.
You can print vivid small letters, but readable, sharp colors, photo quality, durable color resistance, anti-scratch/alcohol proof and on any color of materials even on dark with 3D textured print result.
This rig is fitted with a modified Hitec HS 85 MG. The pcb board has been removed, and fed 1.5v direct to motor . It rotate at about 4 rpm, which is not too bad.Canon SD 860 is loaded with CHDK, shooting at preset intervals. This is as simple as AUTOKAP RIG you can get. It operate from just one 1.5v battery. Weight 425gm.
SuperPCB specializes in PCB fabrication including prototype and production circuit boards.TS16949, ISO9001 and UL certified. IPC Class II or IPC Class III. For more details visit our website.
Flexible LED Strips adopt low voltage(12 v) super bright LED light source(SMD 3528, SMD 5050), mounted directly on the surface of the PCB board. Including Flexible LED Strip series and LED Light Bar series, waterproof and non-waterproof LED Strip light are both available, widely used in indoor and outdoor decoration lighting, large scale backlight etc.
LGB JUMBO 50100 INTERNALS now this picture shows you the two wires i mentioned before earlier that plug onto the two spade connections just in front of that verticaly mounted component PCB board.
Looking at the LGB jumbo pack from the front of the unit where the four micro switch control buttons are located that operate the forwards / reverse / pause and emergency stop functions the black wire from the amp and volt meters plugs onto the left hand spade terminal and the blue wire from the volt and amp meters plugs onto the right hand spade connector just as you can see in it this picture.
Flexible LED Strips adopt low voltage(12 v) super bright LED light source(SMD 3528, SMD 5050), mounted directly on the surface of the PCB board. Including Flexible LED Strip series and LED Light Bar series, waterproof and non-waterproof LED Strip light are both available, widely used in indoor and outdoor decoration lighting, large scale backlight etc.
Atari 2600 Joystick
Model: CX-40
Tools: Regular Screwdriver and possibly needle nose pliers (wires)
After cleaning everything, I was still having issues with the joystick. In order for the red (fire) button to make contact on the new PCB board (bottom nipple was worn) I had to purchase a new button, thus a new spring came with it as well.
The wires are very old (36+ years) so I had to be careful taking them off the old PCB board and placing them on the new one. One was loose (wouldn't stay on the old or new PCB board), thus I took a pair of needle nose pliers and gently tightened the metal piece at the end of the wire onto the board.
I could've purchased new dome contacts and soldered them on to the old board, as you see in the left photo, but I decided to purchase a gold PCB board, which I ordered from Best-Electronics based in San Jose, CA, which is the largest Atari parts store in the world. If you need it, they have it.
LGB JUMBO 50100 INTERNALS another verticle shot showing the various connections via the main PCB board to the main red plastic case top.
Atari 2600 Joystick
Model: CX-40
When I first plugged in Charley's joystick, I couldn't believe the difference. It felt like it was brand new, and even better.
-------------------
Parts Replaced:
* PCB Board (w/ gold PCB Board due to contacts being worn),
*Red (fire) button (due to nipple being worn at the bottom)
*Spring (old spring was dark color due to age, even after washing)
there was a minor clearance issue with the blue rubber. to get proper clearance, the pcb mod was placed above it. learning from this, the pcb board would need a cut in that area to provide better clearance. this was done later. lesson learned.
led lights flashing pattern. taken apart for curiosity & reference for any potential modding.
sidenote:
***around the first week of january 2011, i was told that the tron deluxe identity disc changed their circuit board to a green one lacking open solder points.
however, modders were still successful. the idea is still the same. solder the wires to the resistor that corresponds to each led. it may be a bit more difficult without the open solder spots, but it still works without any issues.***
Atari 2600 Joystick
Model: CX-40
Tool: Regular Screwdriver
The inside, along with the red (fire) button and white joystick handle look brand new.
As mentioned in previous photos, I did have to purchase a new red button, because the bottom nipple of the button is worn, thus it can't make contact on the new gold PCB board. This is common with these PCB boards. A new spring came with it as well.
1. after dissecting the innards i noticed this spot could accommodate an extra pcb board with some clearance that can be cut to shape.
i used a paper plate and cut out a pattern first, which was then traced onto a radioshack blank perf board with a silver sharpie.
dissection photos for reference can be found on my other photo set: www.flickr.com/photos/blackfeathers/sets/72157624977206831/
String Heat Dissipation, Low Thermal Resistance, Long PCB Board Life, Voltage Proof.Learn more, welcome to www.epcb.com
Atari Pole Position restoration
-PCB board repaired
-High Save kit installed
-new T molding
-front repainted
-wood damage repaired on right side
-new steering wheel decal installed
-CPO cleaned
-new power cord installed
Sales Manager
Jack Wu
Mobile: 86-136 9983 9394
Skype: wellwaytech
Email: jack@wellwaytech.com
MSN: jack@wellwaytech.com
Parameter:
Working Voltage
AC200-240V
Luminous Flux
520-550LM
Operating Current
13-14mA
Power Factor
0.5
Power supply
build-in Non-isolated
Beam Angle
360°C
Color Temperature
warm white: 2700-3300k
Neutral white:4000-4500k
pure white:6000-7000k
Housing Material
ABS PC shell+PCB board
Size
36*110mm
Available base
E27/E14/B22
Rendering index
>75
Lamp Temperature
less than 60 degrees
°C
Store Temperature
60°C~-30°C
Operating Temperature
50°C~-20°C
Working Frenquency
50HZ
Life span
50000 hours
Hour
Features and Advantages
1. 360 degrees light beam, good color, high brightness and high color restoration.
2. Energy efficient, low power consumption, it can save 80% energy compared with traditional halogen and incandescent lamp.
3. Convenient in use, adopt E27, E14 and B22 interface. Lamp size is same with halogen lamp, which can instead of traditional lighting lamp directly.
4. Long life span, it can be used as long as 50000-80000 hours, which is up to 10 times conventional incandescent lamp.
5. Green and environment friendly, no radiation, no mercury pollution.
6. CE certificated and ROHS compliant, passed EMC and LVD test, safe and reliable.
Applictions
It can be used in office, school, hospital, subway, market, hotel and any other indoor lighting.
Customer Satisfaction:
Please do not hesitate to contact us if you have any questions or concerns before or after your purchase. We are committed to your 100% satisfaction.
Feedback:
Since your feedback is very important to our business`s development, we sincerely invite you to leave positive feedback for us if you are satisfied with our product and service. It`ll just take you 1 minute. Thank you!
It's back !!! Feb 01/2010 - 032/365. One new PCB board, lens repair, cleaning and testing, it's ready to go !!
Atari Pole Position restoration
-PCB board repaired
-High Save kit installed
-new T molding
-front repainted
-wood damage repaired on right side
-new steering wheel decal installed
-CPO cleaned
-new power cord installed
12 x power led module pcb board assembly. Leds are the Cree: CXA1304-0000-000C0UA40E3, White, 355lm 9V version, 2 leds connected in series --> 18V. Peak current 700 mA.
If a spoon drain is like this I get off and walk the scooter up over the drain, now, even if it means getting off on a Highway.
With the bitumen high and thick on the edge and the gutter concrete shorter than a scooter tyre, then when you try to drive out of this area, you back tyres can get caught as the tread tries to turn upward, specially if the scooter is not directly at right angles to the area, and one wheel gets caught before the other.
The next problem is the steepness of the first upward section and the shortness of it. The result is the scooter bottoms out, and in this case the two top sections slope in different directions making it even worse. With the Auriga spring set to a very soft position the scooter bent in the middle and twisted, the motor laboured and the motor plugs got pulled out of the sockets. After getting a passer-by to lift the seat off for me, I put my hand into the controller box and pushed the plugs back down. The scooter started to go again, so got the next person to come along to put the seat back on for me. The next join in the footpath the scooter stopped again, so I went through the same process of getting the seat taken off and re- pushing the plugs back down. Same thing the next join in the concrete. So this time I left the battery cover off and carried it home. . The battery cover was fowling on the lever and pushing the motor out of gear
After that I got on really flat concrete and the scooter would start very slowly then take off flat out, as if being pushed suddenly forward , then felt like it was free wheeling for a couple of meters then slowed almost to a stop again. I had to lean right forward onto the tiller to prevent my back from being damaged by the sudden forward movements. This went on for an hour all the way home. I guess at least it got me home. Fortunately I was only around the block from home at the time..
After recharging it over night it still did the same thing the next day, for 50 meters from home, so I took it all apart to investigate.
On taking the Brushes out I found one top was not sitting properly onto the brush shaft, as the top bar had been pushed into the shaft instead of sitting over the top of the shaft, and the spring was short and wouldn't pull out to the length it should have been. Obviously this bush would not have been making contact constantly. So ordered new brushes, and set about lifting the battery cover with pipes as described in other photos, to prevent it fouling on the free wheel lever. Attended to the cables to make sure they all would not be interfered with by other cables while going over bumps. Padded all cables and made sure they couldn't be pulled out of their sockets. Made all the wires, specially the ones connecting the batteries, were in as straight line, as they could be ( as electricity likes to go in a straight line).
Made sure the scooter frame wouldn't bend ,thus pulling out the wires in the process. The loose tension on the spring had been causing the scooter to bend too much over uneven surfaces. With the spring collar wound back to where the mark showed on the tread, I could stand on any part of the frame work and the scooter remained perfectly level, where as it used to bend just by pushing it down just with my hand. It hasn't made any noticeable difference to the smoothness of the ride. So the spring is really to hold the scooter motor section, together and straight in line with the front section, not to make it less bumpy over the footpaths. So if you are having a problem with your Auriga , these things could be causing the problem.
Six months ago all of the lights stopped working after going over a two inch high rock on the footpath, that I didn't see in the dark. Checking the globes found they were all ok and so was the wiring and cables, after giving them the wobble test with the motor running while the wheels were off the ground.
After installing a new PCB board to the tiller top, the lights are all working perfectly again, so some thing must have come a miss on the board, and it wasn't the Wires ,Globes, or the Plugs.
In a nut shell If you don't want to have trouble with you scooter get off at Dicey spoon drains, or driveway gutters, and walk the scooter over it and you wont have the same troubles I had.
CX-40 Joystick (cleaned)
Atari 2600 Joystick
Model: CX-40
Tool: Regular Screwdriver
The PCB board along with the rest of the parts to the CX-40 joystick are nice and clean, including the screws, which there's four screws on the bottom of the joystick.
I soaked the pieces in hot soapy water for 2 hours. I then took a tooth brush and cleaned all the parts, including the screws and spring.
To eliminate anything that was left behind, I soaked all the parts (excluding PCB board and the pin/conductor joystick cable cord) in vinegar for 1 hour. The vinegar doesn't harm the plastic parts.
To clean the PCB board, which was quite dusty (previous photo) I used 91% rubbing alcohol with a q-tip. It doesn't hurt the PCB board because a thin piece of plastic covers the board and dome contacts.
12 x power led module pcb board assembly. Leds are the Cree: CXA1304-0000-000C0UA40E3, White, 355lm 9V version, 2 leds connected in series --> 18V. Peak current 700 mA.
Spray Adhesive + graphite powder + roller brush. In an attempt to make DIY PCB board. Did not work. :(
6channel power led control pcb board assembly. Leds are the Cree: CXA1304-0000-000C0UA40E3, White, 355lm 9V version, 2 leds connected in series --> 18V. Peak current 700 mA.
Update 14 nov 2014:
Some R values changes for optimal results.
12 x power led module pcb board assembly. Leds are the Cree: CXA1304-0000-000C0UA40E3, White, 355lm 9V version, 2 leds connected in series --> 18V. Peak current 700 mA.
If you look closely (enlarge photo) you can see which color of wire goes where.
I ordered this board from Best-Electronics, based in San Jose, CA and the largest Atari parts store in the world.
This is what a joystick does when the white plastic joystick handle (and red button) hit the domed contacts.
This board is suppose to last a lifetime and better than the original CX-40 PCB boards. I have to agree, these boards are awesome. They seem to be 25% - 30% better than a new original board.
The next photo shows what the final joystick looks like.
A great platform for providing beginners rapid knowledge of necessary tools to design and verify the Spartan-3 family chips.
Circuit board function descriptions:
Spartan-3 XC3S1000-FT256 has 1,000,000 system gate counts.
4 layers of PCB board layout. SMD components mounted
Xilinx configuration Flash Memory equipped.
On board pulse generator is configurable, jumper is used to obtain the desired frequencies ranging from 1MHz to 200 MHz.
All of I/Os of FPGA are connected to the application interface for users to design the desired circuit connections. Suitable for all application circuits.
110~240V,5VDC/2A Switching Power Adaptor
40-Pin/30cm IDC Flat-cable
JTAG Cable，D-25FM Connection Round cable
It can be plugged into the FPGA development platform for practicing multifunction experiments
Circuit dimension: 120mm x 67mm...
Replacing the traditional PCB board production model, artisJet offers direct print solution for easier production with DTS-3 inks.
We use the latest technology for manufacturing the PCB board because we believe, enables us to offer you a comprehensive electronic manufacturing partnership.
PCB heatbed and glass print surface mounting option. A printed plastic part that holds the washers flat to tighten on to the glass. Holds the glass and PCB board onto a piece of MDF or aluminum.
This shows how I mounted HiViz's new PG2-b photogate kit onto the provided pcb board. I used a cable tie as well as a piece of wire to secure the cable to the board.
HX Electronic Technology Co.Ltd is a professional PCB Assembly manufacturer. We are specialized in Electronic Manufacturing Service in the European market and the US market for more than 10 years. We can provide one-stop printed circuit board service, including PCB fabrication, component sourcing, SMT and THT. HX Technology provides one-stop PCB assembly service for more than 14 years. As a professional supplier of PCBA boards, we are committed to providing high-quality PCB boards. We specialize in small and medium batch production, and HX Technology is equipped with advanced machinery and professional staff. We promise that customer needs will be quickly responded in our company. Product manufacturing follow-up is more professional. Quality control is more refined. After-sales service is more intimate. Our printed circuit board assembly services are widely applied in industrial controllers, medical equipment, telecom devices, environmental protecting equipment, instruments and meters, security system, smart electronic devices, vehicle electronic devices and so on.
PCBA Technology Development
Vigorous development of high-density interconnection technology: HDI concentrates on the most advanced technology of contemporary PCB, which brings fine wire and tiny aperture to PCB.
Strong vitality of component embedding technology: component embedding technology is a huge change in PCB functional integrated circuits. PCB manufacturers have to invest more resources in the system, including design, equipment, testing, simulation, to maintain a strong vitality.
PCB materials that meet international standards: high heat resistance, high glass transition temperature (Tg), low coefficient of thermal expansion, and small dielectric constant.
Optoelectronic PCB has a promising future: PCBA technology uses the optical path layer and circuit layer to transmit signals, and the key to this new technology is the manufacture of the optical path layer (optical waveguide layer). It is an organic polymer that is formed by using lithographic photocopying, laser ablation, and reactive ion etching.
Update the manufacturing process and introduce advanced production equipment.
What is PCB Assembly Services
PCB assembly (pc board assembly) is one of the most important steps in PCB fabrication which includes all the components of manufacturing the complete PCB. There are two ways to make a pc board assembly; namely, Surface Mount Technique (SMT) and Through-Hole Technique (THT). SMT is a circuit assembly technology in which the pinless or short-lead surface-mounted components (SMC/SMD) are mounted on the surface of a Printed Circuit Board (PCB) or other substrate and assembled by soldering through reflow or dip soldering methods. THT uses leaded components with circuit connection leads and mounting holes designed on the printed board, and establishes long-term mechanical and electrical connections by inserting the component leads into the through-holes reserved on the PCB, temporarily fixing them and then soldering them on the other side of the substrate to form reliable solder joints.
Types of PCB Assembly Service
PCB Assembly
HX Electronic Technology Co.Ltd is devoted to providing one-stop service including PCB fabrication, component sourcing, SMT and THT. If needed, we can also provide assistance with circuit board layout, panel optimization and production design. Our factory is equipped with 6 automatic SMT production lines, 2 THT production lines, 2 assembly lines, a large number of advanced inspection and testing equipment. For our current daily production capacity, we can proceed with 10 million SMT soldering points/day, 2.5 million THT pieces/day and electronics assembly is 5000 units/day.
PCB Fabrication
HX specializes in the production and fabrication of single-sided, double-sided, multi-layer all the way up to 24 layers and aluminium backed printed circuit boards, which use metals like aluminium or copper. We can manufacture Metal backed PCBs with aluminum or copper in different thicknesses, any solder mask color, final profiling of metal backed circuits can be punched, routed, supplied as individual circuits or supplied in a v-cut panel.
PCB Functional Test & Programming
HX Technology provides burning services after customers provide test plans to solve customers' complex circuit or time-consuming problems. Through the PCBA test, we can check the circuit board clearly, such as the circuit continuity, all PCBA board function, observe whether there is failure and welding reliability so on. It will avoid the generation of defective products and technical problems accuracy. Our aim is to pursue 0% complaint on quality. In order to make sure nothing goes wrong, we will carry out strict inspection procedures to ensure the delivery of high-quality products.
PCB Enclosure Assembly
We can do PCB enclosure assembly base on the demands of customers. For example, provide electronics enclosures and wiring. We can also provide customization services to save costs and fasten the lead time for our customers.
Advantages of HX Professional PCB Assembly Service
HX-Technology focuses on exploring the SMT patch and post-welding, world, and testing one-stop service for proofing and demonstration.
SMT production lines: 10 SMT production lines.
High-end equipment: FUJI XPF, NXT3, AIMEX III, AOI/SPI/XRAY/smart first piece tester, etc.
Full BOM material supply: RC/magnetic bead inductance/connector/vibration/two transistors and other spare parts in the warehouse.
Fast delivery: customers deliver within 8 hours, and the delivery rate exceeds 95% within 48 hours.
Minimum placement: 03015, 01005, 0201, 0402.
Accompanying hardware innovation platform: design, board manufacturing, patch PCB, component supply.
PCBA OEM services are available.
FAQs of PCB Assembly Service
What is PCBA manufacturing?
The PCB bare board passes through the SMT patch, and then passes through the entire process of the THT plug-in, referred to as PCBA.
SMT (Surface Mount Technology). It is an assembly technology that mounts surface mount components onto PCB bare board.
THT (Through Hole Technology). It is a through-hole insertion installation technology.
What is PCB assembly?
PCB assembly refers to the assembly of various electronic components on the circuit board through the surface packaging process, that is to say, the empty PCB board passes through the SMT upper part, and then passes through the entire manufacturing process of the THT plug-in.
How much does PCB assembly cost?
PCB assembly cost usually consists of four parts. The cost of components, the cost of tooling, the cost of PCB bare board, and the cost of assembly service. For the same project the second order, the tooling cost is not needed. We ship the goods by DHL or FedEx which entails the shipping cost, if our clients provide their delivery account, then this cost is also deleted.
What is PCB assembly process?
We have high-quality control system and cost control system; components are original binding and sourcing traceable. Quick-response customer support and professional logistical management to meet your demands.
What is a PCB assembler?
First of all, bought all materials including PCB bare board, components, stencil according to customer needs, process the EQ stage and Weld the components on PCB board such as SMD &THT.
Metal shrapnel (Shrapnel for short) (because its switch is like an upside-down pot, it is commonly called Guozi slice, or 'pot slice'), also metal dome in English, made of stainless steel, is an important part of the switch.
With the help of the conductivity, the metal shrapnel acts as a high-quality switch between the user and the product. At the same time, the stable resilience of the metal shrapnel (automatically reset after pressing) is leveraged.
Materials for making snap dome and triangle or four-leg metal domes:
The metal dome switches and snap dome are sure to be the switch button. If the various switches are separated from the Metal Domes, it loses its meaning, so it is said that the Metal Domes plays a key role in the switch, and it was later known as the metal dome switches and snap dome.
Application of a metal dome: used on button switches, membrane switches, tact keypads, self-locking switches, metal dome switches, and snap dome.
Function of metal dome switches: to power on and off, which can give the operator good tactile feedback.
Originally, there is no professional name called snap dome in the early days. And a snap dome is made of metal material. Because it is a dome, it can bounce upward and be concave downward (convex and concave). Its initial state is convex upward, and it will concave downward when the operator exerts a force, and then rebounds after the force is removed. This kind of elastic metal material is uniformly called metal dome or snap dome. Later, when metal dome switches were introduced into China, many people were used to calling them metal dome switches. Metal domes also referred to as metal snap domes or tactile metal domes
Custom-made metal dome stickers of different shapes are widely used
There are four main shapes of Metal domes: triangle, circle, ellipse, and cross, with 1, 4, and 5 contacts on the top. The stickers of Metal domes should be customized according to individual needs, do not use them randomly, and avoid affecting the quality of the products. It is very convenient to assemble the stickers on the pot, and it is enough to attach a full version. Of course, pay attention to the stability of the conductive parts of the pot and the circuit board.
Metal domes are mainly in the size of 4MM, 5MM, 6MM, 7MM, 8MM, and 9MM. With a strength of 100-600gf (the strength depends on the customer's product needs), triangular pots are widely used and involve all aspects of our modern life.
The size of the pot is different. The strength can be set to large or small. If special requirements are required, special materials can be used. The strength can reach about 3000gf. The triangle has three feet and a vertex. The legs of the triangular pan can be long and endless, these are determined by the needs of customers.
Metal domes are mainly used in circuit boards, tact switches, micro switches, key switches, pc boards, and other products. It has the characteristics of stable contact, good continuity, and excellent rebound feel. The triangular pan-shaped piece is an excellent accessory used in major electronic products.
About the pot pieces:
The pot pieces can be tinned, silvered, gold-plated, and other different surface treatments. Different treatments on the surface can produce different effects. For example, tin plating can solve the problem of heating without fading. In addition, gold plating and silver plating on the surface will increase the pot pieces Gloss has a certain resistance effect.
About the pan-shaped pieces:
The pan-shaped pieces are generally made by customers with drawings provided by us. The types of pan-shaped pieces most used by the guests are round pieces and oval-shaped pieces, also known as waist-shaped pieces and cross-shaped pieces. Triangular pan slices and rectangular pan slices have diameters from 3mm to 20mm, strength from 100gf to 600gf, and special strength pans can reach 6000gf.
The back of the pan-shaped piece can be dotted or not, the round pan-shaped piece is generally five contacts, and one contact, some special needs no contact. In order to facilitate assembly, the pot pieces are generally stuck together with PET, which not only facilitates assembly but also accurately positions.
About its different names:
Metal domes are also known as metal shrapnel. Its English name is meal Dome slices. Sometimes people will say membrane switches. The name of Metal domes is generally based on his purpose. The ones commonly used in industry are called The shrapnel, and used in mobile phones, the keyboard is called the potsticker, and the switch series is called the membrane switch. Single-layer potstickers are generally full-page stickers.
Advantages: agile operation, fast assembly, disadvantages: bad experience for customers, no dustproof function, easy to be invaded by dust, and cause contact problems. Therefore, the single-layer pot-shaped pieces are becoming smaller and smaller in the market. Only when the Tiebei sealed machine does not require the protection and operation of the pot-shaped pieces, the whole-plate stickers and single-layer structured pot-shaped pieces will be used. The advantages of Double-layer film potstickers are: dustproof, durable, good feel, etc.
Disadvantages: high cost, slow assembly, etc. Double-layer membranes are widely circulated in the market, and almost all electronic products use double-layer structure pots, such as gaming keyboards, medical equipment, and even as small as remote controls. The single-layer metal dome picture below: The application of Guozi films and Guozi film stickers are becoming more and more widespread, and currently involves all aspects of life, such as the induction cooker we use for cooking, TV, air conditioning remote control, mobile phone equipment, bank U shield, cash machine, medical equipment products, various A series of buttons, touch switches, and other products are used in the pot.
Metal dome: the part to complete the work on the pan film switch
Metal dome is widely used. The metal dome is also the most important part to complete the work on the membrane switch. The main function of the metal dome is to contact and disconnect the power supply. Metal dome is generally made of SUS301 or 304 material. The life of the metal dome is generally over 100,000 times. The strength is determined by demand. Do not use it under too high temperature. Excessive temperature will seriously affect the service life of the metal dome.
The metal dome is used on the membrane switch to play a conductive role, conducting the two-pole contact of the membrane switch and rebounding by its own elastic force to complete the power-on and power-off functions. It is energized when the shrapnel is down and powered off when the shrapnel rebounds. Give the customer tactile feedback during the rebound process, with a certain feel (Note: proper operation, excessive back and forth movement may cause the switch to lose response).
There are many common causes of failure of shrapnel:
The operation is too frequent.
The pressure is too large, the stroke is too high.
The isolation layer is too thick.
The operation force is too small.
The effect of these reasons on the membrane switch is that if the shrapnel is forced too hard, the shrapnel cannot spring back, resulting in a continuous path, which means that the metal dome has been working.
The too-frequent operation causes the switch to malfunction and does not work for a short time. Excessive pressure will directly crush the shrapnel and keep working or not working. If it is too large, the metal dome may not be able to complete the work.
Therefore, the factors we need to consider when applying metal dome to the membrane switch are whether the metal dome can withstand the pressure of this product, whether the stroke is consistent with this product, and the isolation layer should not be too thick.
Metal domes are not without a fixed shape and size. They are a kind of custom-made products that can change the shape and size according to the needs of the product. The specifications and sizes of commonly used metal dome or snap dome are:
Specifications of the round snap dome:
Size: 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm. Round keys currently with these shapes are much used by customers.
Strength: 90gf, 100gf, 130gf, 160gf, 180gf, 200gf, 220gf, 250gf, 260gf, 280gf round keys. The most used strengths are divided into these types
Appearance: there is one contact on the top, four contacts, and five contact buttons, and there are also no points and one contact on the top. The three-snap points are evenly distributed on the edge. The round metal domes are all the key shrapnels with the shortest stroke in the shape of the metal dome.
Specification of triangle snap dome:
Size: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm. Triangle key shrapnels currently have more customers with these diameters.
Strength: 130gf, 160fg, 180gf, 250gf, 280gf, 320gf, 350gf, the pressure of the triangular pot is generally these types.
Appearance: the triangular snap dome has two kinds of feet and no feet. The triangular key springs with feet can be directly welded on the PCB board. There are two kinds of points, one is with one point The species is one point among the three surrounding points.
Specification of the cross-shaped snap dome:
Size: 5mm, 6mm, 7mm, 8.4mm, 10mm, 12mm, 13mm, the cross-shaped snap dome customers use more than 7 diameters.
Strength: 130gf, 180gf, 220gf, 280gf, 350gf, 400gf.
Shape: there are no dots, there is one dot in the middle, four dots at the top, and four dots at five dots.
Specification of the oval pan and quadrilateral snap domes:
The oval and quadrilateral rectangular square pan slices are used together because they have no significant difference in shape and size.
Size: 3mm, 3.5mm, 4mm, 4.5mm, and 5mm.
Strength: 100gf, 130gf, 140gf, 160gf, and 180gf are the most used by customers.
Shape: there are no dots, one dot, four dots, and five dots on the surface.
Notes: It is more common for triangular pans to have feet, and for round shapes, there are also buttons with feet. Relatively speaking, the round pan pieces have a shorter stroke, the cross-shaped pan pieces have a larger stroke, the ellipse has a smaller diameter and less force, and the triangle has a shape that can reach a higher level. It can reach 3000gf, and all the pots can be silver-plated or tin-plated. The life of pots of different shapes can be the same. The life of pots in China is generally between 100,000 and 700,000 times.
If you need customized shrapnel, please contact us, as a membrane switch product factory, we can also export customized metal dome layer according to customer needs.
Engineer working with circuits. A woman engineer solders circuits sitting at a table.
Microchip production factory. Technological process. Assembling the PCB board.
Girl repairing electronic device on the circuit board.
next step ! i'm doing an PCB board to clean the rig .
on the picture , the pcb's on paper, to check congestion.
front rig : switch on / off, an LED indicator state of the battery, a potentiometer for adjusting the pace of shots and the rotation of the pan, and an outlet for charging the battery without having to disassemble.
next step ! i'm doing an PCB board to clean the rig .
on the picture , the pcb's on paper, to check congestion.
front rig : switch on / off, an LED indicator state of the battery, a potentiometer for adjusting the pace of shots and the rotation of the pan, and an outlet for charging the battery without having to disassemble.