Schmitt trigger CD4584 over-voltage protection circuit diagram

Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin

As shown in the figure, the over-voltage protection circuit consists of a “six Schmitt trigger CD4584”. When the mains voltage overvoltage or undervoltage occurs, the siren sounds on the one hand, and the working power of the controlled circuit is cut off through the relay. .