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Archives for 2011

2 Simple Earth Leakage Circuit Breaker (ELCB) Explained

Last Updated on January 19, 2025 by Swagatam 36 Comments

The discussed Earth leakage circuit breaker diagrams will monitor the leakage current level of the earthing line of your house electrical sockets and will trip the appliances as soon a fault is detected. Here I have explained 2 designs, first using transistors only and the second using IC LM324. Introduction If anything goes wrong with […]

Filed Under: Security and Alarm Tagged With: Breaker, Earth, ELCB, Explained, Leakage, Simple

16 Easy IC 741 Op Amp Circuits Explained

Last Updated on January 19, 2025 by Swagatam 34 Comments

1 16

The 16 fundamental IC 741 based op amp circuits presented here are not only interesting but also very amusing to build. The included circuit ideas like inverting and non-inverting amplifiers, tone control and regulated power supply will surely intrigue you. Circuit diagrams are also attached with the article. Application Circuits (Learn More) We all are […]

Filed Under: Mini Projects Tagged With: 741, Circuits, Easy, Explained

Non Contact AC Phase Detector Circuit [Tested]

Last Updated on October 12, 2024 by Swagatam 52 Comments

noncontactacsensor

The circuit discussed in this article is of a non-contact mains AC field detector which displays the presence of a mains AC field from a distance of more an 6 inches. Locating Fault in AC Lines without Physical Contact The circuit can be used for locating faults in house wiring without the need of making […]

Filed Under: Sensors and Detectors Tagged With: AC, Contact, Detector, Phase, Tested

Make Your Own Rapid Sea Water Desalination Plant at Home

Last Updated on July 13, 2024 by Swagatam 43 Comments

solar

A simple, low cost set up I have explained in this article will give you a clear idea regarding how to desalinate sea water at a fast rate and in large quantities. The conventional method of solar sea water desalination process is quite sluggish and cumbersome. A simple, low cost but effective idea presented here […]

Filed Under: Solar Controller Circuits Tagged With: Desalination, Home, Plant, Rapid, Water

Regulated, High Current Power Supply Circuit

Last Updated on July 13, 2024 by Swagatam 8 Comments

RippleControlledPowerSupplyCircuitDiagramUsingTransistors

The circuit I have explained below can be used for applications that require stringent voltage regulations and ripple rejection criteria. The transistor pair are configured such that all residual ripple factor are perfectly rectified. Circuit Operation The circuit below shows a simple way of acquiring a perfectly regulated and stabilized high current DC voltage output using ordinary transistors. The circuit […]

Filed Under: Power Supply Circuits Tagged With: Current, High, Power, Regulated, Supply

3 Tested 220V High and Low Voltage Cut OFF Circuits Using IC LM324 and Transistors

Last Updated on January 19, 2024 by Swagatam 180 Comments

over2Bvoltage2Bprotector

An AC mains high/low cut-off device will cut off or disconnect the mains supply from home electrical whenever a high voltage or low voltage situation is detected. In this way it ensures total safety to the home wiring and appliances from fire hazards, due to abnormal over voltages, brown outs or low voltages. In this […]

Filed Under: Voltage Control and Protection Tagged With: 220V, Circuits, High, OFF, Tested, Voltage

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