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Electronics Theory

How to Use Resistors with LED, Zener and Transistor

Last Updated on May 20, 2026 by Swagatam 56 Comments

circuit2

In this post I have explained how to use resistors while designing an electronic circuits using LEDs, zener diodes, or transistors. This article can be very useful for the new hobbyists who normally get confused with the resistor values to be used for a specific component and for the desired application. What is a Resistor […]

Filed Under: Electronics Theory Tagged With: LED, Resistors, Transistor, Zener

How to Connect Diodes in Parallel

Last Updated on May 20, 2026 by Swagatam 10 Comments

calculateflybackdioderesistor

In this post we systematically discuss how to connect diodes in parallel for getting upgrading the overall current specifications of the assembly. This requires special circuit arrangement to ensure uniform current distribution between the devices. Whenever an inductor based load is involved in a DC circuit, incorporating a back EMF protection diode or a freewheeling […]

Filed Under: Electronics Theory Tagged With: Connect, Diodes, Parallel

How to Make Adjustable Current Limiter Circuits

Last Updated on May 20, 2026 by Swagatam 32 Comments

current sensor circuit module

In many sensitive electronic circuits or loads, adjusting the current limit in its power supply could be one of the most crucial requirements for ensuring a fail proof safety for the various vulnerable devices. A simple method of sensing current this using resistors has been discussed in this article. Integrating a Current Sensor Stage The […]

Filed Under: Electronics Theory Tagged With: Adjustable, Circuits, Current, Limiter

Inductors in AC/DC Circuits Explained

Last Updated on May 20, 2026 by Swagatam 12 Comments

inductor capacitor in parallel

In this post I have explained the response of inductors to DC and AC voltages as well as when applied with capacitors which is often used as a complementing part with an inductor. Properties of Inductor Inductors are known for their property of storing electrical energy in them in the form of magnetic energy. This […]

Filed Under: Electronics Theory Tagged With: AC, Circuits, DC, Explained, Inductors

How to Compare IGBTs with MOSFETs

Last Updated on May 20, 2026 by Swagatam 14 Comments

In this post I have explained the main differences between an IGBT and a MOSFeT device. I have explained more about the facts from the following article. Comparing IGTB with power MOSFETs The insulated-gate bipolar transistor features a voltage drop which is significantly low when compared to a conventional MOSFET in the devices which have […]

Filed Under: Electronics Theory Tagged With: Compare, IGBTs, MOSFETs

How to Cascade IC 4033 in Multiple Digit Counter Display

Last Updated on May 20, 2026 by Swagatam 9 Comments

cascadingIC4033circuit

In this article I will comprehensively explain how to cascade many 4033 ICs together for driving multiple 7 segment counter displays. In one of my previous articles I have uniquely explained the role of pin#3 and pin#4 which become crucial when the IC 4033 are intended to function for driving multiple displays. Multiple Digit Display […]

Filed Under: Electronics Theory Tagged With: 4033, Cascade, Counter, Digit, Display, Multiple

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