Automatic Voltage Protector Circuit (1 Relay) (7 Segment Display) (4 LEDs)
It is a microcontroller (Atmega8A) & relay based Automatic Voltage Protector Circuit. Circuit Input Voltage range: 150V – 260V AC. By ensuring fast switching by microcontroller it eliminates almost all high surge voltage during start up. Smooth relay switching by zero-crossing technology it extends relay’s working life. With this Circuit can manufacturing upto 2 KVA stabilizer easily.

These Circuit having the following features –

Features:
Start-up delay with LED blink and delay count with 7 segment common cathode display.
Input and Output Voltage 7 segment Display.
Low and high voltage cut-out is inbuilt.
Zero-crossing relay switching.
Delay time 10 sec / 180 sec.
Trouble free.
No Relay Chattering.
Easy to set with single preset only.
Production can be very fast.