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Voltage drop by resistor

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01-11-2022, 01:36 AM

Electronic M Electronic M is offline

M is for Memory

Join Date: Jan 2011

Location: Pewaukee/Delafield Wi

Posts: 15,410

Quote:

Originally Posted by ppppenguin

This is not correct.

V= I x R

Which can be re-arranged as:

I = V/R

or

R = V/I

It would help if the OP gave us an idea of what he's trying to do. A resistor might be the right way to drop the voltage. In other applications a voltage regulator chip might be better.

If it's a heater supply and the source is AC a diode might even suffice.

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Tom C.

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