Sound can be made using very few parts so many people think a buzzer is needed to make sound. However, this circuit proves something different. In this Simple Transistor Oscillator Speaker Circuit no buzzer is used. Instead a small speaker is driven by transistors and therefore the circuit itself creates sound. Moreover, it is very […]
Toy Organ Circuit using Transistors
Sound can be made using very few electronic parts. This Toy Organ Circuit using Transistors shows how music is made electrically. The circuit uses only two transistors and simple components. So here no IC, no coding and no complex parts are needed. When different push buttons are pressed the different sound tones are produced. Because […]
6V To12V Lead Acid Battery Charger Circuit
This article for 6V To12V Lead Acid Battery Charger Circuit explains about a dual voltage battery charger circuit. Lead acid battery needs correct voltage for proper charging. This charger circuit gives correct charging for both batteries. LM317 IC is the main part of the circuit and it gives stable charging voltage. Battery voltage is selected […]
Transformer Based 12V DC 3A Power Supply Circuit
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 […]