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Subject: Re: Temperature independent constant current source design

Date: 06/10/02 at 1:35 PM
Posted by: Jim Shephard
E-mail: jims@cc.wwu.edu
Message Posted:

In Reply to: Re: Temperature independent constant current source design posted by John Dunn - Consultant on 04/15/02 at 10:52 PM:

I too am trying to design a temperature independant constant current source ( +- .5% over temp.). However the environment that my design is in is quite severe. The temp range is 25 deg C to 121 deg C. The only way I could see this design is using discrete transistors, one using the Vbe across a known temp stable resistor. How though do you compensate the Vbechanges out with temp?

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