Is it a good idea to connect a galvanometer (100 µA panel meter) directly to a PWM output of a microcontroller (or any other digital device for that matter)? I set PWM frequency to approximately 10 kHz and duty cycle varies from 0 to 6% for full scale.
My worry is if the push pull output has a dead time, then the inductor will induce spikes on the driver pin. Does it require extra Schottky diodes to the power supply or are the internal protection diodes sufficient?
I have the diodes lying around, it is not a matter of cost, it is a matter of what is best / necessary practice?
Another option would be a 27k resistor in series and use full 0 - 100% duty cycle, but the question remains as the inductor acts as a current source and "doesn't care" about a series resistor.