1/4 watt plate R

[iknowjohnny]

I want to temporarily put a 100k pot in place of the plate resistor on a gain stage with the wiper to the coupling cap to decide what resistor values i need to get the amount of gain i want for a split load setup. But i see the pots i have and most all common pots are listed as 1/4 watt. Is this doable or ill advised?

[Structo]

I wouldn't use anything less than 1/2w on a plate resistor.

[Firestorm]

In 24mm pots, linear are typically 1/2W. Logs are 1/4. I'd think you'd want linear for this anyway.

[iknowjohnny]

Ok, thanks. Guess i'll just do the old back and fourth swap.

[roberto]

What's the foreseen current flowing through it?
It should be less than 1mA, so the dissipated power will be less than 0,1W.
Take also into account the voltage across the pot.

Otherwise, 1/2W pot will be ok.

[Structo]

I guess I misread the question a bit.
But if you do some loose math, it appears that about .40 watts is dissipated there, not including cathode current.
So 1/2 watt is probably needed.

E2/R=P

[matt h]

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