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Recent New Posts


 Motor burn out and under voltage protection

Monday, July 28th, 2014

This is AC motor burn out protection causes of under voltage input. The principle is simple, it will check for voltage at all times. Normal voltage is 220V AC. If the voltage falls below a preset. Relay will not work and the LED is a warning. Can be set to cut no-off in the voltage […]


 Simple sound effect generator circuit using IC-555 and IC-4017

Saturday, July 26th, 2014

If we want to be a producer,This circuit would be a good starting point to composed music for 1000 tracks. As Figure 1 is a common circuit. Which will see them always when use LED running. We will use an IC-555 timer and IC-4017 Decade Counter Divider with 10 Decoded as sound effect generator with […]


 Simple guitar fuzz effect circuit using IC-741

Saturday, July 26th, 2014

In play guitar or other instruments. Sometimes people just want to be a sound of unusual instruments, from some common. and this fuzz effect circuit or crack, it is the circuit that is commonly used characteristics as shown in Figure 1. How this circuit works In Figure 1 as circuit diagram of this project, we […]


 Sound detector using LM324

Friday, July 25th, 2014

Today Kunal Banerjee send this project to me. It is a sound detector using LM324. He say”DEAR SIR, TODAY I HAVE MADE A SOUND DETECTOR CIRCUIT, AND ITS WORKING VERY GOOD AS ITS CAPACITY TO CATCH THE AUDIO IS TOO HIGH AND EASILY DETECT THE SOUND AND THEN IT WORKS. SO PLEASE ACKNOWLEDGE. THANKING YOU.” […]


 Simple video amplifier using LM359

Thursday, July 24th, 2014

A video signal coming from the video player to connected to others video recorder or the video in of the TV. If we use a long cable to make the signal weaker. Thus, the strength or clarity of the signal is not performing well. We had to use a signal amplifier to solve this problem, […]



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