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Over voltage and Under Voltage Protection System

Under and Over voltage Protection Circuits

Unexpected Changes in the power supply may become the cause many problems in the homes, offices and industries.  Voltage up down in the electric power have a very dangerous effect on connected load.  …

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4v To 220v AC inverter

In mini electronic projects, conversion of DC voltage to AC voltage is very interesting and common problem. In mostly circuits, we observe that almost all design of circuit takes the AC input and …

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Rain Alarm Circuit using Transistors

Rain Alarm Circuit

A rain alarm sensor circuit is very beneficial device for alerting when rainfall. The following circuit diagram is Rain alarm circuit. The diagram shows a water detection circuit. It consists of two NPN …

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Water Detection Alarm Device

water detection alarm device

This diagram shows a device used for water detection, when the probes come in contact with water, the alarm sounds. It consists of only 5 components that are easily available in the market.The …

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Lm 741 op-amp ic– Pin Configuration, Features & Working

LM741 IC

Lm741 ic is the most commonly used op amp integrated circuit. It is a voltage amplifier ic, it inverts the input voltage at the output, It can be found almost everywhere in electronic …

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Touch switch circuit using Transistor

touch switch circuit

There is a list of touch switch circuits some are complicated and some are very simple. In this article we are going to build some simple touch switch circuits. We will use  basic …

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IC 4440 Amplifier Circuit

In this project we are going to built a simple IC 4440 amplifier circuit but the output is very nice and very high. It is 12 volts audio amplifier using is LM4440 IC …

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LM386 Audio Amplifier Circuit

Amplifier Using LM386

In this article we are going to show you a simple LM386 audio amplifier circuit. Circuit diagram of the LM386 audio amplifier is shown in the given below diagram and animated picture. It …

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How to Build a Latch Circuit with Transistors

Transistor Latch Circuit

Latch is logic circuit of electronics which has two stable states. A latch is a device similar to a transistors. It has 3 terminals which function like a transistor base, collector, and emitter. …

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Two Transistor Amplifier

Class A power amplifier circuit

For most systems single transistor amplifier does not provide sufficient gain or output impedance matching. The solution is only to combine multiple stages of amplification. In this amplifier circuit we are going to …

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