Originally Posted by
NC Cams
You'll specifically note in the attached COMMERCIAL servo system that will run 3 large servos a conspicuous absence of relays, thermistors, digital timing circuits and other gingerbread in the DC power supply circuit.
The only "protection" for inrush involves fuses in the AC side of the transformer, that's it.
Could it be that merely properly selecting and matching components is all that is needed???? Perish the thought...
I seem to recall reading somewhere that toriod transformers have core characteristics that cause the inrush current to be higher than that of 'conventional' transformers. That said, the power supply I built for my machine does not have a thermistor. It does have a circuit breaker.
Ken
Kenneth Lerman
55 Main Street
Newtown, CT 06470