A Transistor Based LED Chasing Flashing Circuit is a simple and interesting project. This circuit turns LEDs ON and OFF one by one, so it is called a chaser circuit. Simple transistors are used instead of ICs which the beginners can understand it easily. It is mainly used for learning and decoration. The components are […]
Transistor Circuits
Simple PIR Sensor Timer Circuit using Transistors
Here, is a article for a Simple PIR Sensor Timer Circuit using Transistors. It is with low cost and easy to build and it works with 12V DC supply. When motion is detected the output stays ON for some time. After delay the output turns OFF automatically. Hence, this circuit is useful for lights, alarms […]
Low Cost NPN Transistor Amplifier Circuit
Electronics is very interesting and amplifier circuits are very useful. One of the basic amplifiers is the common emitter amplifier. In this circuit an NPN transistor is used which increases small input signal. An then it gives bigger output signal. Therefore, this circuit is used in sensors and it is also used in audio and […]
Transistor Based Bicycle Tail Light Flashing Circuit
This project is for a simple Transistor Based Bicycle Tail Light Flashing Circuit. It is mainly used as a bicycle tail light and it works on low voltage battery. So it is good for portable use. Moreover, the circuit uses very few components, because of this its easy to build. Also, power consumption is low […]
PIR Sensor Motion Alarm Circuit Transistor and Relay
Nowadays, security is very important that why homes and shops need protection. So to safeguard this motion sensor circuits are useful. PIR Sensor Motion Alarm Circuit Transistor and Relay is simple. It uses very few components and is with low cost and is also is easy to build. The circuit works using a PIR sensor […]
Simple Transistor Oscillator Speaker Circuit
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 […]