Power Supply Design

Dear all, I have the following problem:

I have to design a power supply voltage (about stable 50-100ma) that provides a "linear" change from 3 to 4 volts when the external temperature move from 20 to 45 degrees. Do you have any suggestion?

Thanks Eugenio

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Use an LM35 temp sensor and an opamp with gain of 4 to give you a 1V change for a 25degC change in temperature. Then simply offset by the appropriate amount (at the input or output side) to give 3-4V output which drives an output buffer.

Dave :)

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David L. Jones

Just for the heck of it, what is your professor's name?


Reply to
RST Engineering (jw)

heh heh

You have a wicked sense of humour. I am impressed.

I have noticed a significant upswing in 'shrouded' (yeah right) student questions lately.



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