Ohm Potentiometer Pot
Potentiometer Wattage Value?
Hi,
I have a circuit that requires a pot to drop 1 volt, from 3 to 2 volts.
The current is 180ma so I believe the pot's value would be about 5.55 ohms so the nearest I assume will be 10 ohms.
But what is the wattage of the pot I require and how do I calculate it?
Is it watts = volts x amps, so that would be w = 1 x .18 = .18 watts?
Thanks for any advice
Arnak
Nearest preferred value to 5.5 ohms is 5.6 ohms. If you use 10 ohms the circuit will be way out.
Your power calculation is correct.
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