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Red LED LightStim Circuit for Removing Facial Wrinkles

Last Updated on January 3, 2024 by Swagatam 11 Comments

light color spectrum

An LED based LightStim is a device used for rejuvenating facial skin by stimulating cell growth. Normally, RED LED is used in these devices since red light have been found to be working the best for improving skin health, by eliminating facial wrinkles. Blue LED light have proved more effective against harmful bacteria responsible for […]

Filed Under: Health related Projects

Converting Ordinary Rice Bulb String Light to LED String Light

Last Updated on September 8, 2020 by Swagatam 12 Comments

In this post we study how to convert a rice bulb string light into an LED string light using some simply circuit modification. Circuit Concept Whether it’s during a  festive occasion or for mere decoration purpose, the Chinese rice bulb flashing lights have become  hugely popular nowadays These can be seen as multiple interlaced wire strings consisting of many different […]

Filed Under: Lamps and Lights

230 Volts Bulb String Light Circuit for Diwali and Christmas

Last Updated on January 19, 2025 by Swagatam 33 Comments

diwali 2

In this article I have explained how to wire tiny 12 volt flashlight bulbs into decorative string light for decorating houses during festivals like Diwali and Christmas. What are String Lights As the name suggests a string light is a wired lamp system in which many lamps such as bulbs or LEDs are joined together […]

Filed Under: Mini Projects

12V LED String Light Flasher Circuit for Christmas Decoration

Last Updated on January 18, 2025 by Swagatam 14 Comments

flasher

Looking for a simple 12 V LED string light flasher circuit for your next Christmas decoration project? Learn how easy it is to build a LED wig wag string light flasher using just a couple of transistors and few other passive components. LED Flashing String Lights for Decorating Homes A LED flasher schematic has also […]

Filed Under: Mini Projects

How to Make Powerful Car Headlights Using LEDs

Last Updated on November 27, 2024 by Swagatam 17 Comments

4 pin LED

In this post we see how to build an enhanced and efficient car headlight lamp using Pirhana LEDs. A car LED headlight is a powerful lamp built using high efficiency LED arrays, which creates extremely powerful headlight lamp for the car, along with a very high efficiency in terms power consumption. Using 4-pin Pirhana LEDs […]

Filed Under: Automobile Electronics

Light Emitting Diodes (LED) Explained

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

LED structures

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 the name light emitting diode. Just like a normal diode LEDs also have two terminals with polarity, namely anode and cathode. To illuminate an LED […]

Filed Under: Lamps and Lights, Electronics Theory

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