Simple Over Voltage Protection Circuit: High Voltage Cut Off

Posted on Feb 6, 2014

Voltage fluctuation is a serious issue in every home. Due to some reasons our supply voltage may rise above 110V or 230V. Flow of this high electricity may lead to the damage of our home electrical devices. Have you thought how electrical protection is possible via a simple over voltage protection circuit Here CG comes with an interesting over vo

Simple Over Voltage Protection Circuit: High Voltage Cut Off
Click here to download the full size of the above Circuit.

ltage protection device to protect your electrical appliances from getting damaged. Zener diode voltage regulator is the main part of this high voltage cut off circuit. You can implement this over voltage protection relay circuit in your home as a high voltage regulator. Q3 is our relay driver, turning OFF of Q3 shuts down the relay too. When relay is OFF, there will be no supply of electricity to the device. Hence they are protected from over voltage.

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