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gasboss775
modified 5 years ago

Precise LED dimmer

3
9
211
07:28:13
Opamp and transistor form a voltage controlled current source. Pot and switch provide the control voltage. The switch allows the LED to be completely turned off.
published 6 years ago
lenzrulz
6 years ago
Set your SPDT switch to the OFF position to avoid the sim error message. Otherwise, nice circuit...👍🏻
westelaudio
6 years ago
Led needs 20mA, it's only getting 10.
lenzrulz
6 years ago
Made a few changes: http://everycircuit.com/circuit/4844207022538752
Bushmills
6 years ago
Beware of lenzrulz. He is the most notorious liar, spammer and hypocrite on EveryCircuit. lenzrulz projects himself as victim, while he's creating resentments by his very own actions, and has been doing so for years. Also be wary when he presents himself as tech-savvy individual - his incompetence in the field of electronics is striking. But don't take my word for it, see for yourself. Should you engage into debate with him, keep a hardcopy or screenshots of what was said - he may manipulate his comments. He continuously reposts his crappy spam under the pretext of "cleansing of defamatory comments", but has been observed doing so with crap which didn't even contain a single comment at all. But what else could you expect from liar lenzrulz.
lenzrulz
6 years ago
Ignore the above worn out fallacious narrative propagated by an individual addicted to conflict!
gasboss775
6 years ago
@westelaudio: depends on the led. Some can operate on 2mA and power LESs can use 100s of mA.
gasboss775
6 years ago
@lenzrulz : thanks for the compliment. Unfortunately I couldn't view your circuit in the Kindle version of the EC app
lenzrulz
6 years ago
You are welcome my friend...👍🏻
asolom
4 years ago
It says cannot find solution

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