Auxiliary power supply circuit using variable speed

Posted on Mar 28, 2007

Circuit shown in Figure 3-171. The figure, the auxiliary power supply is single-phase AC power, the single-phase half-wave controlled bridge (diode VD7, VD8 and thyristor vl, V

Auxiliary power supply circuit using variable speed
Click here to download the full size of the above Circuit.

2 composition) output current supply balancing resistor R. Thyristor trigger circuit is a full -wave bridge resistive and capacitive phase shift. Adjustment potentiometer RP, can change the trigger thyristor conduction angle, thereby enabling the motor can be 300 ~ 900r/min continuously adjustable within range.

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