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How to make a very accurate dimmer switch?
I'm trying to do an demonstration for a new IP camera and I need to show how sensitive it "can" be. I need to be able to show customers the camera record a light at 0.3 lux. The question is, how do I make a light that is accurate to .1 lux? Thanks for any help, John.
2 Answers
- 1 decade agoFavorite Answer
Potentiometers will not handle the power of even a 15 Watt lamp, you may find a Variac more suitable, these are variable transformers but are expensive. A domestic dimmer will dim down to zero, but does not give accurate repeatability. Alternatively would switching on a low voltage lamp or even multiple LEDs strategically placed give the results you require?
- edwardLv 51 decade ago
power potentiometers would be your best bet. (just big variable resistors).
Only 2 ways to make a dimmer, Pots or a pwm circuit. Pots would be the easiest way.
