IC555 Timer alarm circuit 5-30 minutes

Hello engineers. Hope all are good. In this article, I am going to discuss a very simple IC555 based timer alarm circuit that can have a time duration range from as low as 5 minutes and as high as 30 minutes. In this timer based alarm circuit, you can select the alarm time delay duration. … Read more

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How to Build VU meter Circuit using LM3915 IC

Hello Engineers. In this tutorial, I am going to discuss an Audio VU meter Circuit. What is a VU meter circuit? A VU meter is also an audio Visualizer that has a group of LEDs as dot or Bar display. VU meters are basically used with the Amplifiers and audio systems to analyze and display … Read more

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Audio Amplifier circuit using LM386 OPAMP

Audio amplifier using lm386 opamp

Hello Engineers. In this project, we will make a simple 1-watt audio amplifier circuit using lm386 opamp. You may be wondering just 1 Watt!! But trust me this 1 Watt power audio amplifier circuit is enough to rock on a whole small cabin or room. This is a low-power high-performance audio amplifier. It’s equivalent to … Read more

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Number Locking System based Door lock using IC4017

Hello Engineers. Hope all are well. Security and automation are a great demand in this era. In this article, I am going to discuss a Number locking system based door lock. This is a cheap and effective way for low level based security by using number locking system based door lock protection. Security is required … Read more

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Simple Automatic Emergency Light circuit Auto on off

Automatic Emergency Light Circuit Hello Guys, Hope everyone is doing well. Power cuts or routine electricity cuts are common in some places. These things are often common. Also, those who don’t have inverters in their home or a specific area like the garage of out doesn’t have inverter connection face problems in a sudden blackout. Here … Read more

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