Simple Flip-Flop Lamp Circuit Diagram

How Does Simple Flip-Flop Circuit Diagram Work? This simple circuit is capable of powering ten LEDs in turn. The time of light turn is determined by the setting potentiometer P1. Basic obstacle model of this circuit uses light yellow as a warning light that turned on...

Simple Voice Recorder Circuit Diagram

How Does Simple Voice Recorder Circuit Diagram Work? This circuit is useful to trigger tape recorder automatically when the phone is picked up. Diode D1-D4 work to convert the alternating current from the telephone line to direct current in order to activate the...

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....