Three single-phase motor stepless thyristor circuits

Posted on Mar 28, 2007

Circuit shown in Figure 3-12. It has a variable speed and timing control functions. When the switch S placed in the 1 position, press the button SB, the motor starts running, a

Three single-phase motor stepless thyristor circuits
Click here to download the full size of the above Circuit.

fter a period of delay, the motor automatically shut down, adjust the potentiometer RPz, may change the timing of time (5-60min). When S is placed Z position, the word is stepless speed circuit, adjust RPi, continuously changing the motor speed. Mainly through 555 IC A.

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