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Subject: Re: controlling leds

Date: 11/25/02 at 8:56 PM
Posted by: Russ Kincaid
E-mail: russlk@netzero.com
Message Posted:

In Reply to: controlling leds posted by Richard Astley on 11/25/02 at 2:08 PM:

Put 390 ohms in series with each LED to limit the current to 20 mA, connect all these to the emitter of a TIP31 transistor. Connect the collector to the voltage source and connect the base to a 10K pot that is connected from the voltage source to common negative.


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