Over and under voltage protection circuit diagram and will be output voltage of 9 5 volts.
Over under voltage protection circuit diagram.
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.
Generally fuse or mcb is used for overvoltage protection however in this project our aim is to make a circuit which can perform better than a fuse or mcb and overcome the.
For the lower voltage you can see some flickers in the lights and for the higher voltage one the circuit will be fully damaged.
We use primary coil transformer is 380 volts to protect them not damaged by too over voltage.
The entire circuit is powered with rectified dc supply but the regulated power is connected to timers and unregulated power is connected to potentiometers to get the variable voltage.
This is because of the high potential.
The under voltage and the overvoltage protection circuit is a circuit which protects you from the higher voltages and the lower voltages conditions.
Both the timers are configured to work as comparators i e as long as the input present at the pin2 of timer is less positive than 1 3 vcc then the.
Over voltage protection using timers circuit operation.
This voltage sensor circuit can be used to protects any appliance to voltage fluctuation.
When voltage drop down to 180 volts this voltage as above will entered to diode rectifiers d1 d4.