Sometimes we need to make a quick decision but choosing is not easy, so we flip a coin. Now imagine doing the same with electronics. This Transistor Based Coin Toss Game Circuit works like a real coin toss and it gives random result every time. When power is applied, no one knows the result. One […]
Automatic Solar LED Light Circuit
Solar power is free energy and it comes from the sun. It is clean and is renewable, because of this solar lights are very popular today. This is Automatic Solar LED Light Circuit and it turns ON light at night, and it turns OFF light at day automatically. In this circuit there is no switch […]
Transistor Based LED Chasing Flashing Circuit
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 […]
Automatic PIR Motion Sensor Light Circuit
This project explains about a complete Automatic PIR Motion Sensor Light Circuit. It is very useful for home and outdoor lighting, because the circuit uses a PIR sensor. Whenever motion is detected the light turns ON automatically. After some time, the light turns OFF and therefore, power is saved. Also, through this circuit the human […]
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 […]