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Help replacing LED on PCB - All About Circuits
2020年3月4日 · The color is dependent on its chemistry, Gallium Phosphide (GaP) or Indium Gallium Nitride (InGaN), respectively. Let's say the LEDs are lemon-lime color and their Vf=2.2v each, which is typical. Since LEDs 1&2 are in series, those voltage drops add giving 4.4v. Those LEDs are also in series with a parallel pair of 2kΩ resistors, which results ...
I'd like to find/build a simple/affordable gaussmeter that can …
2018年10月5日 · Oddly enough, I used to be in the electronics industry making microscopic circuits including Hall devices. I have gold wire, silver paint, metal alloys that are liquid just above room temp and wet both glass and plastic, even silicon and gallium arsenide wafers, but not doped. So I should be able to make my own probe.
Connecting 60Hz supply to a 50Hz heater | All About Circuits
2015年3月12日 · Reloadron, it is not a motor, a convection heater bought off catalogue. (equipment is on a floating production rig, voltage produced by onboard GTG, 440V 3 phase, amounting to 254V single phase between line and neutral).
Any experience soldering platinum to stainless steel? [SOLVED]
2017年5月3日 · Hello, Currently, I am using a cold-bonding conductive epoxy to bond stainless steel stranded wire to 1mm x 2 mm platinum contacts. This approach works, but the epoxy doesn't hold up as well as I would have hoped. Wondering if I could just solder the two together for a more durable connection...