High Voltage Cutoff Circuit Diagram

Parts list for the proposed high low mains voltage protector circuit.

High voltage cutoff circuit diagram. As a result transistor q1 is in on and transistor q2 gets switched off. Juliet 8 years ago plzzzzz tell me the size of the auto transformer to be used and i didnt get what is no n where exactly the appliance to be checked should be kept kind request to you to send me all the details of working. R1 r2 r3 r4 r5 r6 r7 r8 4k7. So it helps to protect the circuit damage by the high voltage.

This voltage sensor circuit can be used to protects any appliance to voltage fluctuation. Before using this circuit set the preset and check the relay or output to at which input voltage level relay gets activated. When the input voltage goes high then the relay will be activated and also when the input voltage is below then required level then relay activated. The following circuit utilizes a transformer for powering the circuit.

Over voltage and under voltage protection circuit for high and low voltage cutoff. If you use this circuit for autocut on over 6v then use 6 v relay and circuit need 6v. High and low voltage cutoff with delay and alarm principle. The ac mains high and low voltage cut off circuit explained in this article is very easy to build and yet very reliable and accurate.