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Coops You cannot get 20V DC output, this is not a transformer.. This is a 220V speed regulator for 220V Brushed motors. It switches the voltage on and off very quickly to create a pulsed DC output, and turning the knob changes the amount of time that the voltage is at 220V compared to Off. So, when knob is at maximum, it gives 220V continuously. When knob is half way, it gives pulse of 220V DC then zero volts for equal amounts of time, so it provides 50% speed.

2021-01-02 11:30:59 役に立つ (1)
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