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Blinking LED Circuit using LDR and Resistors

Last Updated on September 10, 2022 by Swagatam 2 Comments

This is perhaps the most simplest looking LED flasher that does not depend on any semiconductor. This LED blinker circuit utilizes ordinary passive components like a few resistors, a capacitor […]

Filed Under: LED and Light Effect, Mini Projects, Oscillator Circuits, Simple Circuits

Light Emitting Diodes (LED) Explained

Last Updated on August 30, 2022 by Swagatam Leave a Comment

The full form of LED is Light Emitting Diode. LEDs are special type of semiconductor diodes which emit light in response to a potential difference applied across their terminals, hence […]



Filed Under: Electronics Tutorial, LED and Light Effect

Light Meter Circuit with LED Bar Graph

Last Updated on May 18, 2022 by Swagatam 10 Comments

In this post we will discuss 3 different light meter circuits for measuring power of light. In the first method we will use only a solar cell and a multimeter, […]

Filed Under: LM3915 IC, Meters and Testers

Temperature Controlled Relay Switch Circuit

Last Updated on May 12, 2022 by Swagatam 98 Comments

In this article we discuss a simple temperature controlled relay circuit which can be switched ON/OFF depending on the temperature on its temperature sensor. Meaning, when the temperature on its […]

Filed Under: Heater Controllers, Mini Projects

LED Oscilloscope Circuit

Last Updated on February 23, 2022 by Swagatam 12 Comments

The simple LED oscilloscope circuit explained in this article can be used for analyzing low frequency waveform through a 10 x 10 LED matrix display. Due to the involvement of […]

Filed Under: 4017 IC Circuits, LED and Light Effect, LM3915 IC, Meters and Testers

How to Design Simple LED Driver Circuits

Last Updated on January 4, 2023 by Swagatam 63 Comments

In this post we will discuss how to design your own customized, simple LED driver circuits at home. We will learn how to calculate specific LED configurations for applying the […]

Filed Under: Electronics Tutorial, How to Articles, LED and Light Effect



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