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Changing Frequency

A slightly unusual project today …. We’re working with a company developing a novel electrochemical cell for producing hydrogen and they asked if we could increase the frequency of the PWM output. It’s not something we’ve done before [we’re usually asked if we can slow it down], but we took on the challenge and found that we could. It throws up some interesting problems around the various timing loops within the software but we’ve tripled it to 60kHz fairly easily and it looks like 200kHz is on the cards.

Screenshot of 60kHz PWM waveform