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How an Autotransformer Works – How to Make

Last Updated on February 26, 2022 by Swagatam 5 Comments

An autotransformer is an electrical transformer which consists of only a single, continuous, non-isolated winding, with tapped terminals across various points of the winding. The winding section between the taps […]

Filed Under: How to Articles, Power Supply Circuits

How IC LM337 Works: Datasheet, Application Circuits

Last Updated on December 17, 2020 by Swagatam 2 Comments

In this post we will talk about the function of an interesting voltage regulator device: The LM337, which is basically the negative complementary device for the popular LM317 IC. Built […]



Filed Under: Power Supply Circuits

Soft-Start Power Supply for Amplifier Loudspeakers

Last Updated on May 5, 2022 by Swagatam 9 Comments

The proposed slow-start power supply circuit is specially designed for power amplifiers to ensure that the loudspeaker connected with the amplifier do not generate the loud and unwanted “thump” sound […]

Filed Under: Power Supply Circuits

50 Watt Sine Wave UPS Circuit

Last Updated on December 1, 2021 by Swagatam 8 Comments

The UPS detailed in this article can provide a power output of 50 watts consistently, at 110 volts with a frequency of 60 Hz. The output is fundamentally a sine […]

Filed Under: Inverter Circuits, Power Supply Circuits

Low-Dropout 5V, 12V Regulator Circuits using Transistors

Last Updated on March 9, 2021 by Swagatam 33 Comments

The transistorized low-dropout voltage regulator circuit ideas explained in the following article can be used for getting stabilized output voltages right from 3 V and above, such as 5 V, […]

Filed Under: Mini Projects, Power Supply Circuits

110 V to 310 V Converter Circuit

Last Updated on May 28, 2021 by Swagatam 11 Comments

The discussed circuit is a solid state AC to DC voltage converter that will convert any AC input between 85 V and 250 V into a constant 310 V DC […]

Filed Under: Home Electrical Circuits, Power Supply Circuits



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