PWM for a solenoid?

Question

I want to drive a solenoid rated at 12V 1A. As you can see, the power demand is quite high. Can a solenoid be driven in PWM?

If so, what are some guidelines? IE: the minimum duty cycle to keep a solenoid active, etc.

Thanks ahead of time.

E

YT2095 · Answer

In my experience with solenoids, you may well need the 1 Amp initially to pull the core inwards, after that, the further in it gets the less current you`ll need, and Holding current when in the locked position can be significantly less than 1 Amp. so you May be served well with a simple large value reservior capacitor for that initial hump. I`v had solenoids that you`de be really hard pushed to pull apart when held with a simple watch battery when in the locked position. might be worth experimenting with

Robert Peter Oakes · Answer

You can also get specific devices to absorb the hammer in the pipes. this would be your best solution, using PWM will introduce a whole load of other complications, RFI, Severe back EMF to name a couple

PWM for a solenoid?

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