A Simple Solenoid Driver Circuit is a setup to control solenoid using low voltage signal. Solenoids are like magnets and they change electric power into movement. They need more voltage than small digital parts like microcontrollers can give. The driver works like a switch and it lets small signal turn big current ON and OFF […]
IC LM386 Based Voiceover Project Circuit
IC LM386 Based Voiceover Project Circuit is small audio project. It takes mic sound and makes it louder with LM386 chip and then sends to speaker. We can use this for public speaking, mix audio with mic first or talk in presentations. IC LM386 chip is easy to use and uses less power and give […]
Simple White Noise Generator Circuit
Simple White Noise Generator Circuit is DIY project. It make sound like radio hiss or static. Circuit is used for sound effect, privacy noise and testing audio tools. Noise come from electronic parts. We can use resistor or reverse transistor for noise. Capacitor remove too high or too low sound. Circuit Working: Parts List: Component […]
Simple Missing Pulse Detector Circuit
Simple Missing Pulse Detector Circuit is an electric circuit. It finds when pulse is missing in pulse signal. Most time it uses 555 timer IC and work like monostable multivibrator. When it gets trigger it gives one output pulse. If next pulse does not come in time then timer is in no reset. Output pulse […]
Supercapacitor Charger Circuit
We can charge supercapacitor safe and proper with and simple and easy to make Supercapacitor Charger Circuit. Battery does not charges or drain fast. Supercapacitor can do fast charge and drain. But supercapacitor hold less energy than battery. Circuit uses voltage regulator chip like LM317 to control voltage to supercapacitor. Regulator checks supercapacitor voltage and […]
Mains AC Power Supply Failure Buzzer(Alarm) Circuit
Mains AC Power Supply Failure Buzzer(Alarm) Circuit is small device. It makes sound (buzzer) when AC power goes OFF. It helps us to know power gone and is useful if we have important machine to know power goes at night. It uses one switch called relay. When power is there the relay works and stops […]