Need a strong 12V DC supply for our electronics projects? A stable and powerful DC supply is the heart of any electronics project. This Transformer Based 12V DC 3A Power Supply Circuit delivers clean and reliable power. It converts AC mains into smooth DC power and it provides high current with low noise output. It […]
Regulated 9V Power Supply Circuit using IC 7809
In many electronic projects, we need clean and fixed voltage for proper working. 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. This power supply is very useful for small electronic circuits and beginner […]
5 To 20 Minutes Alarm Timer Circuit
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 […]