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 […]
Square and Triangle Wave Generator Circuit
This Square and Triangle Wave Generator Circuit is a simple waveform generator. It 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. 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 […]
Bluetooth Controlled Police Siren Sound Circuit with Arduino
Nowadays, Arduino projects are very popular and they controls everything. They are easy to build and they are useful for learning electronics. This project is about Bluetooth Controlled Police Siren Sound Circuit with Arduino. Arduino UNO is the main controller and Bluetooth module is used for wireless control. With Bluetooth we can control lights and […]
9V Loud Speaker Sound Generator Circuit
This article explains about a 9V Loud Speaker Sound Generator Circuit. It is simple and is with low cost and it works on 9V DC power supply. It gives loud sound compared to simple buzzer. Therefore it is useful for alarms, door bells, alerts and projects. Here, common transistors are used so beginners can build […]