Circuit Diagram

The circuit shown above differs from the circuit described in the previous page, which had only a single SCR. This circuit has a free-wheeling diode in addition, marked D in the circuit shown above. The circuit operation is described next. The explanation is based on the assumption that both the diode and the SCR are ideal. It means that the voltage drop across the device while in conduction is zero and the leakage current in the blocking state is zero.

 
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