Security Door Locks Circuit with IC 4022
security door circuit
This circuit can apply to many hobby project .
An electronic door lock circuit different, which is very simple, and we do not need lots of materials for the UN it is produced. The key to a line of code should be strengthened by the straight line, so you optocupler Enable IC1.
If by mistake and stepped spy who does not belong in combination, then the block is trapped. To recover, we adjust the unit for the block, you must press the switches S1 or S10 for correct the password.
The external reset button S1 is inside and lock the S10,
The Code of the circuit, it is connected, and IC4022 and can be easily modified by changing the connections in the keyboard switch.
The Q2 BD679 can lead to everything, etc. external circuit relay events, while providing electrical insulation of the circuit due. In addition, the circuit can be powered by a 9V ..
Electronic Part List
D3=RED LED 3mm
S1-10=Push button or keyboard