Quote:
Originally posted by Turbokeu
In case of powering the CO30 by the computer PSU, I still recommend the the "fly wheel" diode on the pump.
When the computer PSU powers down, the pump is still running (slowing down rapidly) and therefore acting as a generator and injecting some voltage back into the PSU.
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Very good point. I had only been thinking about the diode in terms of clamping the switching spikes while the pump is running.
I hadn't thought about the pump acting as a generator until it came to a stop.
I agree. The diode should go in. (A 1N4001 is probably the most common diode that would work here.)