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Newly Updated Circuit Projects:

SCR/Thyristor Circuit Configurations

Last Updated on May 20, 2026 by Swagatam Leave a Comment

Now in this article we will try to understand step by step how we can use this thyristor in practical work. That can be for controlling heavy loads like electric lamps, heaters, or motors and so on. So this part is more about real application and not only about theory. How We Trigger The Thyristor […]

Filed Under: Electronics Theory Tagged With: Configurations, SCR, Thyristor

How to Make Logic Gates using Transistors

Last Updated on May 20, 2026 by Swagatam 14 Comments

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In this post I have explained how to build NOT, AND, NAND, OR, and NOR logic gates using discrete transistors. The main advantage of using transistor logic gates is that they can work even with voltages as low as 1.5 V. In some electronic applications the available voltage may be inadequate to power TTL or […]

Filed Under: Electronics Theory Tagged With: Gates, Logic, Transistors

Understanding Bipolar Junction Transistors (BJTs)

Last Updated on May 20, 2026 by Swagatam 4 Comments

If we look at the diodes, their internal construction look very simple. They are made by joining two pieces of semiconductor material, and this is called a pn-junction. But when we talk about bipolar junction transistor or bjt, then things get little more complicated. It needs adding one more layer of semiconductor material, and that […]

Filed Under: Electronics Theory Tagged With: Bipolar, BJTs, Junction, Transistors, Understanding

Understanding AC Circuit and Calculating AC Waveform

Last Updated on May 20, 2026 by Swagatam Leave a Comment

dc circuit and waveform

The sinusoidal waveform or sine wave is the most commonly used AC waveform in circuit theory. When a periodic AC waveform is produced by a voltage source, it creates an EMF that changes polarity at regular intervals, with the time it takes to complete one full reversal known as the waveform’s period. Direct current, also […]

Filed Under: Electronics Theory Tagged With: AC, Calculating, Understanding, Waveform

How Load Conducts in Half-Bridge Driver Circuits like IR2184 or IR2110

Last Updated on May 20, 2026 by Swagatam 4 Comments

Many folks, especially beginners, they get fully confused when they try to use a half-bridge driver circuits using ICs like IR2184 or IR2110. They look at the datasheet diagram and start thinking, “Bro, how the load will conduct? The MOSFETs are switching one by one so how the current will pass through the load? Looks […]

Filed Under: Electronics Theory, Inverter Circuits Tagged With: Bridge, Circuits, Conducts, Driver, Half, Load

DPDT Relay Working, Pinouts, Testing Explained

Last Updated on May 20, 2026 by Swagatam 23 Comments

In this post we are going to understand about how this DPDT relay actually works, how we identify its pinouts, and how we can use it in our projects. We shall go step by step so that you can feel confident with every small thing about it. Introduction We know that a DPDT relay means […]

Filed Under: Electronics Theory Tagged With: DPDT, Explained, Pinouts, Relay, Testing, Working

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