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My solder joints are looking a lot better now that I have a good soldering iron (Weller 25W) and smaller solder (0.32mm versus 1mm).
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NZ ELECTRONICS REPAIR is dedicated to providing the best customer service. When your Mobile iPhone, SmartPhone, Laptop, PC or Mac needs Repairing, you won’t have to worry for long! We are here in Auckland to help you Call 0800585222/ 09-4892622 / 0276585222. Our technicians are skilled in dealing with all computers and gadgets whether you need a Home or Business computer repairs. We have fully trained mobile phone technicians as well. For all your Technology & Smart Device Help, Repair & Servicing Needs such as Phone Battery Replacement, Data Backup, and Recovery, Glass Replacement, iPhone Camera Repair, or any kind of Phone Service by certified Electronic Engineers.NZ ELECTRONICS REPAIR provide services for apple Repair, iPhone repair, Macbook Repair, smartphone Repair, Data recovery and all other Brands, 30 min repair
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>>>>>>>>>> click the "ALL SIZES" magnifying glass to see a bigger pic <<<<<<<<<
PARTS
• 2 or 3 12-position rotary switches (or 10-position, whatever you can get)
• 2 pin or banana jacks (to match your test leads)
• resistor assortment from 5 ohms to 1M or greater; gold bands (5% tolerance) are better than silver bands (10% tolerance).
• project box
INSTRUCTIONS
1- Get a box and drill holes for mounting two or three 12-position rotary switches. Drill holes also for the two jacks.
2- Mount the switches and the jacks; label switch positions with corresponding resistor values.
3- Follow this diagram and solder resistors directly to the lugs of the rotary switches.
NOTE: If you solder the resistors so their unsoldered leads extend the opposite direction of the switch's shaft, these leads can be gathered together and soldered at once, connected to the bus wire terminating in point "A".
• The first switch would provide the lowest resistance, the next would provide mid-range resistors, and the final switch would be wired to the resistors with the greatest resistance.
• As seen, the 12th lug of the depicted switch connects to the next switch in the array. Naturally, the final switch in the array would have its 12th lug connected to the final resistor in the matrix.
PANEL
To mark the panel for the resistor values:
1- Turn the mounted switches to position "1" (doesn't matter at all how you orient the switches, just turn them to their lowest resistor settings).
2- Place knobs loosely on shafts and turn their pointers to wherever you want "1" (your lowest resistor value) to be located around the dial (near top or bottom of dial, usually).
3- Once all pointers are angled to this position, tighten their set screws to keep them in place.
4- With your marker, put dots where the pointers point as you click them all around their orbits.
5- Label these dots with the corresponding resistor values. Position "12" can be marked with an arrow pointing to the next switch.
USAGE
1- Set all rotary switches to "12" for starting position. This will provide the greatest resistance available (this is safest on the circuit). Plug your test leads in.
2- Begin turning the LAST dial downward and observe the response of the circuit (LED brightness, audio output, circuit clocking - whatever you're after).
3- When you get to position "1" on this switch, turn the next rotary switch to position "11" to continue the resistance decrease, and so on until you reach the resistance value desired.
4- Observe the resistance the dial is pointing to; grab another resistor of the same value, and your green LED will never again scare you with that ember-like, off-yellow, over-voltage, "Seeya in LED Halvala" glow.
No, this is not the Google Earth view of some city. It is a macro of a silicon wafer containing VLSI circuits. Each of those blocks is about a centimetre on each side and contains numerous transistors.
Thanks a lot to my friend in our university's VLSI lab for allowing me to take this photo.
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A close up of an old motherboard of mine taken with a 50mm prime and a reversing ring to get an extra magnified macro.
Closeup on the plastic guides (white part) that had to be removed. Just unscrew the screw, remove, rescrew the screw :-)
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Product image of components from the Jennic range - www.sequoia.co.uk/components/manufacturer_list.php?m=12&a...
Jennic is a market leader in ZigBee, 6LoWPAN, IEEE802.15.4 wireless microcontrollers, modules and evaluation kits.
Tough only goes so far. Don't drop the machine with a USB cable plugged in! Hint: The jack's not supposed to be lifted off the board like that.
Father of a friend bought this computer a few years ago; brought it to us because it would no longer work and wanted to see if we could restore it to life. Could not. In fact, a search of the web turned up all kinds of horror stories on this model - a very high-end machine with two (count 'em, two!) disk drives and a fingerprint detector security device. Basically a lemon of a design.
Ultimately the computer was beyond my desire - and that of the owner - to repair; sounded like a motherboard replacement is the typical repair path with this and even then you're at risk of a future failure. Fortunately the drives were just fine so we just pulled the useful info off of them for him.
TN9 System
electronics
The design allows to use side glass covering only in the final showcase cabinets: lower price, same safety!
La vetrina Joy consente di non installare i separatori in vetro intermedi, assicurando così praticità e sicurezza
Macro of some 'old school' electronics, meaning pre-surface mounted devices and computer chips. Circuit board from an old battery backup emergency light.
The Ruby circuit fully assembled and housed in the Balvenie tube. I'm planning to add a small hole in the back, at the bottom, so I won't have to open it up to replace the battery.
Fluke 289 Industrial multimeter is a high performance logging multimeter designed to solve complex problems for electronics, plant automation and many more.
This is the mysterious object as it appears on the wall. Notice the small vents near the top where the "S1" component rests. Could it make some kind of sound? Does it sense a gas? Is it a government spy device?
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NZ ELECTRONICS REPAIR is dedicated to providing the best customer service. When your Mobile iPhone, SmartPhone, Laptop, PC or Mac needs Repairing, you won’t have to worry for long! We are here in Auckland to help you Call 0800585222/ 09-4892622 / 0276585222. Our technicians are skilled in dealing with all computers and gadgets whether you need a Home or Business computer repairs. We have fully trained mobile phone technicians as well. For all your Technology & Smart Device Help, Repair & Servicing Needs such as Phone Battery Replacement, Data Backup, and Recovery, Glass Replacement, iPhone Camera Repair, or any kind of Phone Service by certified Electronic Engineers.NZ ELECTRONICS REPAIR provide services for apple Repair, iPhone repair, Macbook Repair, smartphone Repair, Data recovery and all other Brands, 30 min repair
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NZ ELECTRONICS REPAIR is dedicated to providing the best customer service. When your Mobile iPhone, SmartPhone, Laptop, PC or Mac needs Repairing, you won’t have to worry for long! We are here in Auckland to help you Call 0800585222/ 09-4892622 / 0276585222. Our technicians are skilled in dealing with all computers and gadgets whether you need a Home or Business computer repairs. We have fully trained mobile phone technicians as well. For all your Technology & Smart Device Help, Repair & Servicing Needs such as Phone Battery Replacement, Data Backup, and Recovery, Glass Replacement, iPhone Camera Repair, or any kind of Phone Service by certified Electronic Engineers.NZ ELECTRONICS REPAIR provide services for apple Repair, iPhone repair, Macbook Repair, smartphone Repair, Data recovery and all other Brands, 30 min repair
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A new generation of cheap lightweight plastic electronic technology that does not require silicon, but which is optically transparent and can be coated onto everyday objects would transform our world.
"Working collaboratively with industry is not only satisfying in that I see aspects of my work translate into real engineered products, but it provides inspiration for new avenues of research too. Roadmapping then allows me to critically assess how I should be developing my research portfolio and engaging with industry to maximise the likelihood of productive collaboration."
—Dr Andrew Flewitt
Imagine electronically updated food labels, computers embedded in our armchairs, even contact lenses linking us directly to the Internet to bring us into the age of plastic electronics. In this video podcast Dr Andrew Flewitt and Dr Robert Phaal both from the Department of Engineering and Scott White serial entrepreneur and CEO of Pragmatic Printing talk about the creative partnership forged between different parts of the Department of Engineering and outside companies that enable the technology and research in this area to be exploited successfully.