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Newly Updated Circuit Projects:

1A Step-Down Voltage Regulator Circuit – Switched Mode 78XX Alternative

Last Updated on January 19, 2025 by Swagatam 4 Comments

simpleswitcherregulatorIC

You will be amazed with the features offered by this outstanding voltage regulator IC. As the name refers to, the output from this series of ICs is not only regulated and stabilized but is in the form of switched pulses at very high frequencies. Enhanced Version of the Popular 78XX ICs These ICs may be […]

Filed Under: Power Supply Circuits Tagged With: Down, Mode, Regulator, Step, Switched, Voltage

Make this Temperature Indicator Circuit with Sequential LED Display

Last Updated on December 31, 2018 by Swagatam 2 Comments

temperatureindicatorcircuitwithLEDdisplay

In some of my earlier articles we have seen a few simple and interesting temperature indicator circuits, in this article we will try to upgrade one of them into a sequential form. All these circuits are useful in some or the other ways, however these are not equipped with  step wise temperature level indicator arrangement […]

Filed Under: Sensors and Detectors Tagged With: Display, Indicator, LED, Sequential, Temperature

4 Universal Electronic Thermometer Circuits

Last Updated on May 24, 2026 by Swagatam 16 Comments

roomthermometercircuitusinglm35IC

Here I have explained four best electronic thermometer circuits which can be universally used for measuring body temperatures or atmospheric room temperatures ranging from zero degrees to 50 degrees Celsius. In the previous post I explained some of the features of the outstanding temperature sensor chip LM35, which gives outputs in varying voltages that’s directly […]

Filed Under: Health related Projects Tagged With: Circuits, Electronic, Thermometer, Universal

How to Make a LED Flashlight Circuit

Last Updated on June 1, 2026 by Swagatam 13 Comments

White LEDs have become so common nowadays that even school kids today know how to use them for making simple LED projects. LEDs are typically used for illuminating purposes, the discussed circuit is also intended for similar applications. The post talks about how to wire LEDs and battery to make a simple DIY LED flashlight. […]

Filed Under: Lamps and Lights Tagged With: Flashlight, LED

Illuminating 24 White LEDs from two 9 Volt Cells

Last Updated on June 1, 2026 by Swagatam Leave a Comment

lighting24ledsfromtwo9voltbatteries.

In this post I have explained about a special circuit which can illuminate 24 high bright white LEDs from a single 9V PP3 battery, let’s unravel the secret behind this amazing circuit. Nine volt cells as the rating suggest, provides 9 volt output, but what about the current? A 9 volt PP3 battery will not […]

Filed Under: Lamps and Lights Tagged With: Cells, Illuminating, LEDs, Volt, white

Make this LED Driver Circuit for Backlighting Small LCD Screens

Last Updated on June 1, 2026 by Swagatam Leave a Comment

zetexic

In this post we study a LED driver circuit specially designed for backlighting LCD screens applications, Introductionlet’ learn more about this interesting device. Introduction Today LCD products have become very common and a part of our everyday life. Whether it’s your cell phone, DVD player, TV set, car, all incorporate LCD screens for indicating or […]

Filed Under: Lamps and Lights Tagged With: Backlighting, Driver, LCD, LED, Screens, Small

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