hello guys, I need to control an electromagnet's intensity. Not an on/off state but varying. Thinkin to use constant current instead of pwm after some reading i've done. Any experience on a specific method's pros and cons? What sort of transistor one uses with arduino to control constant current ? …

control Constant Current-Electromagnet

Grumpy_Mike May 7, 2014, 2:58pm 10

If you have distroyed 3 FETs so far you are doing something wrong. Do you have a reverse biase diode across the coil? Is the FET getting hot?

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