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Newly Updated Circuit Projects:

Arduino Musical Tune Generator Circuit

Last Updated on May 15, 2026 by Swagatam 4 Comments

arduino2Bsiren

You can use this little Arduino musical tune generator circuit for a preferred application, such as for making an interesting door bell, as a car reverse horn, or music box for gifting somebody, or simply for personal amusement. Hardware Required The Hardware required for the project are given as follows: The Arduino is powered with […]

Filed Under: Arduino Projects, Audio and Amplifier Projects Tagged With: Arduino, Generator, Musical, Tune

5 Simple Power Bank Circuits for Mobile Phones

Last Updated on May 17, 2026 by Swagatam 174 Comments

powerbank

In this article I have explained a 5 assorted power bank circuits using 1.5V cell and 3.7V Li-ion cell which can be built by any individual for their personal emergency cellphone charging functionality. The idea was requested by Mr. Irfan What is a Power Bank Power bank is a battery pack which is used to […]

Filed Under: Battery Charger Circuits Tagged With: Bank, Circuits, Mobile, Phones, Power, Simple

Illuminating DRL and Turn Lights with Single Common Lamp

Last Updated on May 16, 2026 by Swagatam 54 Comments

drl2Bturn2Bwith2Bcommon2Bled

In this article I have explained a simple circuit for enabling the turn signal lamp of any car to carry out a two-way function of DRL lights as well as well the stipulated turn lights. The idea was requested by Mr. Artem. Technical Specifications Thank you for your fanaticism with electronics, this is really noticeable […]

Filed Under: Automobile Electronics Tagged With: Common, DRL, Illuminating, Lights, Single, Turn

Smart Emergency Lamp Circuit with Maximum Features

Last Updated on June 8, 2026 by Swagatam 122 Comments

smart E light

In this post I have explained about a simple yet sophisticated automatic emergency light circuit which can be considered “smart” due to the involved advanced features and an inexpensive design. The idea was requested by Mr. Lokesh. Technical Specifications Hi sir, I am so glad to see your interest towards electronic circuits. So eagerly waiting […]

Filed Under: Lamps and Lights Tagged With: Emergency, Features, Lamp, Maximum, Smart

3 Frequency to Voltage Converter Circuits Explained

Last Updated on June 8, 2026 by Swagatam 6 Comments

f2Bto2Bv

As the name suggests frequency to voltage converters are devices that convert a varying frequency input into a correspondingly varying output voltage levels. Here we study three easy yet advanced designs using IC 4151, IC VFC32 and IC LM2907. 1) Using IC 4151 This frequency voltage converter circuit using IC 4151 is characterized by its […]

Filed Under: Meters and Testers Tagged With: Circuits, Converter, Explained, Frequency, Voltage

2 Simple Voltage to Frequency Converter Circuits Explained

Last Updated on September 22, 2026 by Swagatam 7 Comments

C2

A voltage to frequency converter circuit converts a proportionately varying input voltage int a proportionately varying output frequency. The first design is using the IC VFC32 which is an advanced voltage to frequency converter device from BURR-BROWN specifically designed to produce an extremely proportional frequency response to the fed input voltage for a given voltage […]

Filed Under: Oscillator Circuits Tagged With: Circuits, Converter, Explained, Frequency, Simple, Voltage

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