Re: [[EE] Resistor power rating

Normally, resistor power ratings assume 100% duty cycle, so 1/0.016 would
be a first approximation, but the part may not be capable of withstanding
that much pulsed power.
Unfortunately, the low duty cycle ratings are hard to find on most
resistors.


On Mon, Dec 8, 2025 at 11:37 AM David C Brown <[email protected]> wrote:

> I am planning to use a 2R2 resistor to limit the current to a solenoid to
> 6amps.
> Ohms law says that the power dissipation is about 80watts.
>
> But the duration of the current pulse is only 16mS.   Does that mean that I
> can get away with a lower power rating and, if so, how much lower?
> __________________________________________
> David C Brown
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>
>
> *Sent from my etch-a-sketch*
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