Posted on Jun 1, 2012

The gate drive that phase controls the four parallel SCRs is accomplished with complementary MOS hex gate MC14572 and two bipolar transistors. This adjustable line-synchronized driver pennits SCR conduction from near zero to 180 degrees. A Schmitt trigger clocks a delay monostable multivibrator that is followed by a pulse-width monostable multivibrator. Line synchronization is achieved through the half-wave section of the secondary winding of the full-wave, center-tapped transformer.

Click here to download the full size of the above Circuit.

This winding also supplies power to the circuit through rectifiers D 1 and D2.

Leave Comment

characters left:

New Circuits



Popular Circuits

15 Watt Amplifier
PC Based GPS
Coil-less FM Transmitter
Power supply protection circuit
Cmos logic probe
pic RN-41 bluetooth module not transmitting data
vhf video transmitter circuit
Based NJM2701 3D surround audio circuit
D2025 dual-channel audio amplifier circuit diagram