This is a small Natural Bird Sound Generator Circuit using Transistors, as this circuit uses two BC547 transistors, some resistors, capacitor and a speaker. In addition, the circuit is simple for beginners and works on low voltage like 3V to 9V and is also good for toys, hobby projects, alarms and for school projects. Circuit […]
Transistor Circuits
Laser Security Alarm Circuit using LDR and BC547 Transistors
This project is for Laser Security Alarm Circuit using LDR and BC547 Transistors, as it uses LDR, two BC547 transistors, one diode and a buzzer. When laser light breaks an alarm rings. Additionally, this circuit is cheap and very easy to build and is good for door security, box security and drawer protection. Circuit Working: […]
LDR Light Sensor Circuit using BC547
To begin with, this LDR Light Sensor Circuit using BC547 works by itself; when it is dark the LED turns ON and when light comes then LED turns OFF. LDR feels the light and controls the LED and there is no need to press any switch. Additionally, this simple and very low-cost circuit works well […]
Sound And Light Metronome Circuit using Transistors
Music needs rhythm and a metronome helps us keep that rhythm perfect; also this small project for Sound And Light Metronome Circuit using Transistors turns light into beat. When light changes then sound speed also change and hence, this project is simple, fun and easy to build. What is Metronome: Metronome is small device that […]
Simple Human Touch Sensor Circuit with Transistor
A human touch can do magic! So this Simple Human Touch Sensor Circuit with Transistor shows how a tiny finger touch can switch ON a light; therefore, no switch, no button just a skin current makes it work. Also, it is a cool and educational mini project for learners. Circuit Working: Parts List: Components Values […]
Simple Battery Level Indicator Circuit
No More Dead Battery! Battery gone down? having no idea? then this Simple Battery Level Indicator Circuit can show battery level. Also, easy to make, cheap and works fast; furthermore, know when battery is full or low and is good for beginners and DIY lovers. Circuit Working: Parts List: Components Values Quantity Resistors 2.2k 1/4 […]