This Switch Selectable Four Frequency Pulse Generator Circuit is simple astable oscillator circuit and it uses the famous 555 timer IC in astable mode. Frequency can be changed in four steps, by just pressing switch and by selecting the capacitor. Here, output is the square wave signal and it works in astable mode, so it […]
Oscillator Circuits
3A PWM Power Generator Circuit with IC 555 and LM350
This circuit is for a high power pulse generator which uses 555 timer IC as a pulse oscillator and IC LM350 regulator which gives high current output. IC 555 can handle high current up to 3A and gives small output current and IC LM350 provides output current upto 3A. Therefore, this 3A PWM Power Generator […]
LM3909 IC Based Square Wave Generator Circuit
Electronic projects often need a signal source and this signal can be a pulse or square wave. Therefore, a frequency generator is useful for these type of signal source. Here, we have used LM3909 IC which is simple with low power, it works well on small voltage and also the circuit is cheap and easy. […]
Simple Two Transistor Buzzer Circuit
A buzzer is a small sound making device that is used in alarms, toys, and indicators. This Simple Two Transistor Buzzer Circuit is very simple and easy to make. It uses only two transistors and therefore, it is good for beginners. Also, it works with low voltage and because of this it is safe to […]
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 […]
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 […]