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BrianG · 02.20.2010, 10:00 PM

All you need is a constant current source to keep the current at a certain value. The trouble might be finding a circuit that has a low enough drop out value so that most of the battery voltage is available at the output.

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BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	02.20.2010, 10:00 PM All you need is a constant current source to keep the current at a certain value. The trouble might be finding a circuit that has a low enough drop out value so that most of the battery voltage is available at the output.