Simple Digital Combination Lock Circuit Diagram

How Does Simple Digital Combination LockĀ Circuit Diagram Work? This circuit is a simple digital combination lock circuit using IC LS7220. The output of this circuit can be connected with relay as an ON/OFF controller in electronic circuits. This circuit operates at...

Simple Disco Lamp Circuit Diagram

How Does Simple Disco LampĀ Circuit Diagram Work? This simple circuit actually is a simple form of flip-flop circuit. LED will blink simultaniously according to the arrangement. Transistor T1 and T2 work as multivibrator, whilst transistor T3 and T4 as astable...