Time control is very important in out daily life. Sometimes we do forget small tasks. So this 5 To 20 Minutes Alarm Timer Circuit helps us remember. It gives alarm after a fixed time as the circuit uses popular IC 555 timer. Time can be selected from 5 to 20 minutes by just pressing start […]
Mini Condenser Microphone Amplifier Circuit
This Mini Condenser Microphone Amplifier Circuit is low cost project. It helps condenser mic give clear output by making weak mic sound more strong. It improves voice signal from condenser mic and gives circuit a good audio gain. The circuit works with small 9V battery supply and no IC is needed in this design. Anyone […]
50Hz Square Wave Generator Circuit using Transistors
This article is for 50Hz Square Wave Generator Circuit using Transistors. Two transistors switch ON and OFF one by one. Outputs blink opposite time. No IC is used only simple parts are required. We can change resistor or capacitor to change speed. This circuit is good to learn basic oscillator working. Circuit Working: Parts List: […]
Transistor Based LED Alternator Blinker Circuit
This circuit is for simple Transistor Based LED Alternator Blinker Circuit. Two LEDs blink one after another as this circuit uses two NPN transistors. This circuit is an astable multivibrator, which is also called an oscillator circuit. This project is good for beginners an it is used for learning transistor switching. It can be used […]
12V Mini Inverter Circuit using Transistor TIP41
This 12V Mini Inverter Circuit using Transistor TIP41 is a simple micro inverter. It converts 12V DC battery power into AC power where the AC output is with low power. It is useful for learning and for small experiments and it can light small AC load like night bulb. This circuit uses two TIP41 transistors […]
DIY Inverter Circuit using Transistors
In this tutorial we will learn about easy inverter circuits. Anyone can understand and build it. Only few parts are needed with no IC and no complex design. Just two power transistors and a transformer. It converts 12V battery power into AC supply which is good for beginners and DIY lovers. Best for learning how […]