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Diode

Do We Need a Freewheeling Diode Across the Inductor in Boost Converter?

Last Updated on May 11, 2025 by Swagatam Leave a Comment

So here we are trying to understand whether we must put a freewheeling diode directly across the inductor in a boost converter or not, to safeguard the switching transistor? How Boost Converter Works So in a boost converter, we got one inductor, one power switch like a MOSFET, one diode and one output capacitor. Input […]

Filed Under: Voltage Control and Protection Tagged With: Boost, Diode, Freewheeling, Inductor, Need

How to Calculate Zener Diode Resistor

Last Updated on January 23, 2024 by Swagatam 19 Comments

how to find zener resistor value

In this article I have explained how to calculate and the find the value of the zener diode resistor using simple formulas. What is a Zener Diode Zener diodes are semiconductor devices which are used for regulating an input DC voltage to any desired output voltage. The regulated output voltage value directly depends on the […]

Filed Under: Electronics Theory Tagged With: Calculate, Diode, Resistor, Zener

What is a Gunn Diode? How it Works?

Last Updated on January 3, 2024 by Swagatam 1 Comment

gunn diode image

Gunn diodes are semiconductor devices which are used to generate low-power microwave signals in a simple and low-cost manner. These have been in use for more than 60 years now. Gunn diodes can work with frequencies ranging from a few gigahertz to over 100 GHz. It was first discovered by J. B. Gunn of IBM […]

Filed Under: Electronics Theory Tagged With: Diode, Gunn, Works

Simple Diode Circuits Explained

Last Updated on May 31, 2021 by Swagatam 8 Comments

rectifier diode compressed

In this post I have explained how to use rectifier diodes for building some practical and useful electronic circuits. A diode is the most basic semiconductor electronic component, which is built with a single pn semiconductor junction. It has only two terminals, which are referred to as the anode and the cathode. Diodes can be […]

Filed Under: Mini Projects Tagged With: Circuits, Diode, Explained, Simple

Ni-Cd Low Battery Monitor Circuit using Lambda Diode

Last Updated on September 21, 2020 by Swagatam 5 Comments

graph

The main feature of this lambda-diode low battery indicator for Ni-Cd batteries is that, the circuit itself consumes almost zero current, until the set low threshold level is reached and the indicator LED is illuminated. This feature makes the circuit very suitable for many low voltage battery operated systems, like radios, watches, timers, alarms, remote […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Diode, Lambda, Monitor

Zener Diode Circuits, Characteristics, Calculations

Last Updated on October 15, 2022 by Swagatam 25 Comments

zener characteristics

Zener diodes – named after its inventor Dr. Carl Zener are fundamentally used in electronic circuits for generating precise voltage references. These are devices that are able to create a practically constant voltage across them regardless of variations in circuit and voltage situations. Externally, you may find zener diodes a lot similar to standard diodes […]

Filed Under: Electronics Theory Tagged With: Calculations, Characteristics, Circuits, Diode, Zener

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