Circuit shown in Figure 3-81. The circuit uses a transistor delay circuit to achieve start-stop cycle control. You can take the hand moving and automatic manner. Circuit is pri
marily controlled by the motor run time circuit (VTi and the FET transistor VTz, VTa etc.) and downtime control circuit (the FET transistor VT4 and VTs, VT6 etc.) of two parts. Adjust potentiometer RPi and RPz, can change the motor running and stop time.