Clamp Circuit Diode

How does a diode clamp work?

I need to know some details, also if anyone knows of a great electronics website about circuit theory that would be great. Thanks

A diode normally conducts in one direction , forward bias (Anode = positive to negative = Cathodee) . How ever a clamp relies on the reverse breakdown voltage. Basically connect a reverse biased (Cathod connected to the positive, Anode connected to the negative) diode across the voltage to be clamped.

When the voltage rises above the reverse break down voltage the diode will conduct.

Zener diodes used as voltage regulators rely on reverse breakdown voltage in order to provide a constant voltage

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UNI-T UT208 Digital Clamp Multimeter by UNI-TREND

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