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Newly Updated Circuit Projects:

Connecting Voltage Regulators 78XX in Parallel for High Current

Last Updated on November 24, 2022 by Swagatam 61 Comments

78XXinparallelforhighercurrent

In this post we investigate how to connect popular voltage regulator ICs such as 7812, 7805 in parallel for acquiring high current output from the ICs. Voltage regulator chips mostly have their maximum current output specs fixed to some predetermined levels. Increasing them to a higher level would normally call for external out board transistors […]

Filed Under: Power Supply Circuits Tagged With: 78XX, Connecting, High, Parallel, Regulators, Voltage

5630 SMD LED Driver/Tube light Circuit

Last Updated on June 1, 2026 by Swagatam 99 Comments

smd led

In this post I have explained a simple transformerless SMD 5630 type LED tube light circuit which can be built by anybody for illuminating home interior cheaply. The idea was requested by Mr. Smeet. Technical Specifications I am a very big fan of your website and it has been much helpful to me in my […]

Filed Under: Lamps and Lights Tagged With: 5630, Driver, LED, Light, SMD, Tube

Half-Bridge Mosfet Driver IC IRS2153(1)D Datasheet

Last Updated on June 30, 2026 by Swagatam 70 Comments

irs2153appicationnotecircuit

In this post I have explained the datasheet, specifications, pinout configurations and a few application circuit for the IC IRS2153 which is a half-bridge IC from Texas Instruments. The unique feature of this half bridge driver is that it does not have to depend on external logic sources for the operations, rather allows configuring its […]

Filed Under: Datasheets and Components Tagged With: Bridge, Datasheet, Driver, Half, IRS2153, MOSFET

3-Phase Signal Generator Circuit using Opamp

Last Updated on September 22, 2026 by Swagatam 116 Comments

Screenshot2014 11 2200.58.38

Many a times we find it crucial and handy to possess a true three phase signal for evaluating many different electronic configurations such three phase inverters, three phase motors, converters etc. Since it’s not so easy to incorporate single phase to three phase conversion quickly we find this particular implementation difficult to acquire and enforce. […]

Filed Under: Oscillator Circuits Tagged With: Generator, Opamp, Phase, Signal

Homemade Inductance Meter Circuit

Last Updated on June 8, 2026 by Swagatam 12 Comments

inductancemetercircuit

In this article I have explained a simple yet accurate, wide range inductance meter circuit. The design utilizes only transistors as the main active components and a handful of inexpensive passive components. The proposed Inductance meter circuit can measure inductance or coil values accurately over the given ranges and as a bonus the circuit is […]

Filed Under: Meters and Testers Tagged With: Homemade, Inductance, Meter

Making a Parasite Zapper Circuit

Last Updated on September 25, 2026 by Swagatam 6 Comments

frenquencygeneratorparasitezapperschematic

An interesting electronic parasite zapper circuit shown below was successfully built and tested by my friend Mr. Steven. I have explained more about the proposed circuit. What is a Parasite Zapper The purpose of this device is simple, it is meant to act like a parasite zapper, a DIY electronic device that people say can […]

Filed Under: Pets and Pests Tagged With: Making, Parasite, Zapper

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