Resistors in Parallel = wattage?

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syscokid
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Resistors in Parallel = wattage?

Post by syscokid » Tue Dec 03, 2013 2:49 pm

Combining a 10k/3w and a 47k/2w in parallel will produce a resistance of 8.2k.
But what about the wattage rating?
Does it remain at 3w?
Does it increase to 5w?
If the rating increases: Is there a disadvantage to this when using this combo as a power resistor?
"When I'm on stage and first plug in, and I feel a rush of air in my balls... That's when I know my guitar is sounding good!" -Leslie West

fperron_kt88
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Re: Resistors in Parallel = wattage?

Post by fperron_kt88 » Tue Dec 03, 2013 3:30 pm

In parallel, it is V that is equal for all.

P can be computed using (V^2)/R in each resistor. You *have* to verify P for every resistor you connect and *each* resistor must respect its *own power rating* at all times.

Be safe! Have fun!

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