What Happens When Input Voltage Exceeds PIV in a Half-Wave Rectifier?

[pupul07]

Was wondering what would happen to the output voltage when the input voltage exceeds the PIV/PRV.

 

[berkeman]

Was wondering what would happen to the output voltage when the input voltage exceeds the PIV/PRV.

Could you please define your terms, and maybe provide a datasheet for a part? Is PIV peak inverse voltage?

 

[Bob S]

For a single-diode half-wave rectifier going into a capacitor filter, the peak repetitive inverse/reverse voltage on the diode is TWICE the peak input ac voltage. If you exceed the PIV/PRV and short the diode, you could damage other components (transformer, etc.) and maybe start a fire. If the diode opens up, your output dc voltage goes to zero. This could even happen if you don't exceed PIV/PRV.

Bob S