Universal motor control

Posted on Dec 25, 2012

When the time delay expires, SCRl conducts and removes the gate signal from SCR2, which stops the motor. Both the time delay and motor speed are adjustable by potentiometers R2 and R3. If heavier motor loads are anticipated, use the larger C30B SCR in place of the GE-X1 for SCR2

Universal motor control
Click here to download the full size of the above Circuit.

Also, the capacitance of Cl can be increased to lengthen the time delay, if desired.

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