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Subject: Re: Constant current sources to drive LEDs on long lines

Date: 02/25/03 at 11:24 PM
Posted by: Russ Kincaid
E-mail: russlk@netzero.com
Message Posted:

In Reply to: Re: Constant current sources to drive LEDs on long lines posted by David Ambry on 02/25/03 at 9:43 PM:

Instead of the LM317, use a PNP transistor in a constant current circuit which is easily turned on or off. Or, find an IC regulator that has a control input.


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