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2, the voltage and current relationship across a diode are: (1) if VD VF (VF is called the forward bias voltage, VF = 0.3 V for germanium diode and...
2, the voltage and current relationship across a diode are: (1) if VD > VF (VF is called the forward bias voltage, VF = 0.3 V for germanium diode and VF = 0.7 V for silicon diode), the diode becomes a conductor and acts as a closed switch, (2) if VZ < VD < VF (VZ is the reverse breakdown voltage, VZ =5V - 100 V), the diode acts as an insulator or open switch, and (3) if VD < VZ , the diode operates in the breakdown region, and acts as a closed switch. The figure on the left shows one application of a diode for voltage surge protection due to inductive load. How does it work?
