Quote:
Originally Posted by Camelopardalis
.....What's the significance of the frequency with a PWM, in a practical sense? Is it just the frequency it's pulsing the current on/off? (I'm guessing about this!)
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Dunk, basically yes your right. From my limited knowledge of the electronics involved, the frequency refers to the switching frequency. The longer the duration (width of the pulse) of the circuit being on, the higher the total power supplied to the load, the shorter the duration the lower the power supplied to the load. Importantly the switching happens so fast that it does not affect the operation of the load device.
Full details here:
https://en.wikipedia.org/wiki/Pulse-width_modulation
Clear as mud right?