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