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Subject: Re: Simple Constant Current Source

Date: 12/15/01 at 10:05 AM
Posted by: John Dunn - Consultant
E-mail: ambertec@ieee.org
Message Posted:

In Reply to: Simple Constant Current Source posted by Mike Gray on 12/15/01 at 1:03 AM:

Hi, Mike.

I just e-mailed to you, the simplest current source ciruit that I know of so far. It uses two transistors and two resistors, though, not one.

Transistors are available to take the voltage you require and although I drew the circuit as a positive current source using PNP devices, it can be made for negative currents if NPN devices are used instead.

Good luck.

John Dunn - President
Ambertec, Inc.

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