Over Voltage Protection Circuit Power Supply

In its simplest form it can be provided by using a zener diode placed across the output of the regulated power supply.

Over voltage protection circuit power supply. The circuit has a few components it is very easy to build and will protect your electric equipment againg overvoltages. For protection from high voltage surge we always use overvoltage protection or crowbar protection circuit. In some situations where the input voltage is higher than expected we always use an overvoltage protection or crowbar protection circuit. With the zener diode voltage chosen to be slightly above the maximum rail voltage under normal conditions it will not conduct.

Another very simple form of over voltage protection uses an approach called voltage clamping. The over voltage protection circuit is based on brute force. Overvoltage protection is a characteristic of a power supply system which somehow deals with the voltage across the load side when the input voltage exceeds the pre set value. Overvoltage protection is a power supply features which cutoffs the supply whenever input voltage exceeds the preset value.

This is a sequel to our anatomy of switching power supplies tutorial and we are going to explore in depth all power supply protections like over voltage ovp under voltage uvp. Crowbar protection circuit is a type of overvoltage protection which is most commonly used in electronic circuits. The crowbar circuit must be mounted between power supply and the protected device.