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 the PIR sensor detects motion, it turns the light ON automatically and after a preset delay, it turns the light OFF, saving power and reducing human […]
Simple PIR Sensor Timer Circuit using Transistors
This article presents a simple PIR sensor timer circuit using transistors; the circuit costs little, is easy to build, and operates from a 12 V DC power supply. When the PIR sensor detects motion, the output stays ON for a preset time and then turns OFF automatically after the delay, hence, this feature makes the […]
Low Cost NPN Transistor Amplifier Circuit
Electronics is very interesting and amplifier circuits are very useful, as one of the basic amplifiers is the common emitter amplifier. This circuit uses an NPN transistor to amplify a small input signal into a larger output signal; therefore, designers use this circuit in sensors, audio circuits and switching applications. In short this article explains […]
Transistor Based Bicycle Tail Light Flashing Circuit
This project presents a simple transistor based bicycle tail light flashing circuit; the circuit primarily functions as a bicycle tail light and operates from a low voltage battery, making it suitable for portable use. Moreover, the circuit uses very few components, because of this its easy to build and also, power consumption is low and […]
Square and Triangle Wave Generator Circuit
This Square and Triangle Wave Generator Circuit is a simple waveform generator, which gives two outputs at same time with one output is square wave and another output is triangle wave. Also, the circuit uses only one IC which uses few resistors and capacitors, so the cost is low and the circuit is easy to […]
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. The PIR Sensor Motion Alarm Circuit with Transistor and Relay is simple because it uses only a few components, costs very little, and is easy to build. The circuit works using a PIR sensor […]