Simple Rat Repellent Circuit Diagram

How Does Simple Rat Repellent Circuit Diagram Work? When the circuit is in close state, IC555 is used to control the timer of the buzzer using resistor and capacitor. The buzzer sounds like alarm in different frequency. Rat Repellent Schematic Diagram Here is the...

Simple Ultrasonic Transmitter Circuit Diagram

How Does Simple Ultrasonic Transmitter Circuit Diagram Work? This circuit works as a wireless ON/OFF switch. IC555 is the oscillator, with output frequency 40-50 kHz and output voltage around 9V. The ultrasonic receiver circuit using IC LM324 as an input amplifier...

Simple Magnetic Sensor Circuit Diagram

How Does Simple Magnetic Sensor Circuit Diagram Work? This circuit works as magnetic switch. When the magnet close to the sensor, it will product the output voltage to IC1. Output voltage of IC1 will activate the timer which then activate the relay controlled by IC2....

Simple Digital Combination Lock Circuit Diagram

How Does Simple Digital Combination Lock 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 Lamp 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...