Simple Audio Level Indicator Circuit using IC LM3915 show sound strength with lights, its display driver is good for sound visual circuits. Also, it takes analog voltage and can light up 10 LEDs, LCDs or other displays in line. This circuit uses an LED VU meter, which music lovers enjoy because it displays sound levels […]
Free Energy From Air Circuit
This post for Free Energy From Air Circuit uses free energy from air, whose idea is simple as air is full of radio waves. When radio is ON we can hear static and even in empty place, so if we make strong power setup then air can give us endless energy. Furthermore, circuit uses antenna, […]
Power ON Delay Circuit
To begin with, Power ON Delay Circuit using IC 555 give time gap between power ON and circuit starts. When trigger comes, IC 555 work in monostable mode and give one output pulse for set time; furthermore, resistor R1 and capacitor C2 make timing part for delay. When the circuit is OFF, the output stays […]
Simple Decimal Counter Circuit
In this article for Simple Decimal Counter Circuit instead of count in binary (0 to 1) the decimal counter count in base is 10 (0 to 9). Also, one simple and main way to make it is use Decade Counter IC which is good for beginners. Furthermore, the IC like 4017 is easy to find […]
Automobile Brake Failure Indicator Circuit
Automobile Brake Failure Indicator Circuit is backup system, which tell driver if brake system have a problem; as it uses electric parts to check brake and if problem comes then it show light or make sound. Furthermore, this circuit work only in cars with negative grounding and it also give signal if brake switch does […]
Panic Alarm Button Circuit using IC 555
Make cheap and easy Panic Alarm Button Circuit using IC 555, as this IC 555 work like bistable circuit with two states: alarm ON and alarm OFF. Pressing the panic button starts the timer, which stays ON until we press the reset button; the timer produces a HIGH output, turns ON the transistor, and activates […]