Hello Friends The name of this circuit is Password Switch System. You can use this system in many places like you can put a 12v dc solenoid lock in your cupboard, or you can install it in any of your devies to turn the system on and off with a password
In this we have used these components
12v relay
100k ohm resistance x 2
10 k ohm resistance
IN4007 Diode x 5
CD 4017 ic
BC548 transaction
Push button x 9
PCB
You can use a charger or battery to power this circuit.
This is the diagram of password switch system -
We have made it in very less money.
Comentários