In many electronic projects, we need clean and fixed voltage for proper working, so this Regulated 9V Power Supply Circuit using IC 7809, it takes higher DC voltage and gives stable 9V output. IC 7809 is easy to use and gives safe, constant voltage and also this power supply is very useful for small electronic […]
5 To 20 Minutes Alarm Timer Circuit
Time control is very important in our daily life, sometimes we do forget small tasks; so this 5 To 20 Minutes Alarm Timer Circuit helps us remember. This circuit provides an alarm after a preset time by using the popular IC 555 timer. We can select a delay from 5 to 20 minutes by pressing […]
Mini Condenser Microphone Amplifier Circuit
This mini condenser microphone amplifier circuit is a low cost project that strengthens the weak signal from a condenser microphone to produce a clear output; further it improves the microphones voice signal and provides good audio gain. The circuit works with a small 9V battery and does not require an IC, so anyone can build […]
50Hz Square Wave Generator Circuit using Transistors
This article is for 50Hz Square Wave Generator Circuit using Transistors, here, two transistors switch ON and OFF one by one and outputs blink opposite time. We used no ICs; we require only simple components, and this circuit also helps us understand the basic working of an oscillator. Also, we can change the resistor or […]
Transistor Based LED Alternator Blinker Circuit
This circuit is for simple Transistor Based LED Alternator Blinker Circuit; here, two LEDs blink one after another as this circuit uses two NPN transistors. This circuit is an astable multivibrator, also known as an oscillator circuit; also this project is ideal for beginners because it helps them learn transistor switching, and we can further, […]
12V Mini Inverter Circuit using Transistor TIP41
This 12V Mini Inverter Circuit using Transistor TIP41 is a simple micro inverter, which converts 12V DC battery power into AC power where the AC output is with low power. Furthermore, it is useful for learning and for small experiments and it can light small AC load like night bulb; also this circuit uses two […]