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How to Add a Dimmer Facility to a LED Bulb

Last Updated on June 18, 2022 by Swagatam 97 Comments

In this article I have explained how to make an LED dimmer circuit for enabling a dimming facility to any mains operated LEDs bulb. How LED Bulbs Work We know that our ceiling fans and incandescent bulbs can be easily controlled using triac dimmer switches, and we are quite used to with dimmer switches in […]

Filed Under: Lamps and Lights Tagged With: Bulb, Dimmer, Facility, LED

Simplest 100 Watt LED Bulb Circuit

Last Updated on December 9, 2024 by Swagatam 163 Comments

In this article I have explained a very simple 100 watt LED bulb circuit using a few high voltage capacitors. The entire circuit could be built at a cost less than $25. I have already discussed many capacitive type of transformerless power supply circuits in this blog, however all these suffers from a couple of […]

Filed Under: Lamps and Lights Tagged With: 100, Bulb, LED, Simplest, Watt

How to Make Car LED Bulb Circuit

Last Updated on December 8, 2019 by Swagatam 8 Comments

car led bulb circuit

Typically all car turn signal lamps are around 12 to 20 watt rated which are traditionally incandescent bulb types and produce much lower light intensities compared to LED lights. Here I have explained how these lamps can be replaced with high efficiency, high intensity car LED bulbs. LED Car Bulb Design The image below shows […]

Filed Under: Automobile Electronics, Lamps and Lights Tagged With: Bulb, LED

Operating Single Rice Bulb Lamp with 220V AC

Last Updated on June 20, 2019 by Swagatam 12 Comments

In this post I have explained a simple 220V mains operated transformerless single rice bulb power supply circuit, which may be used for illuminating electronic rice lamp diyas replacing traditional oil lamp type diyas during festivals or for decorating sacred idols. The idea was requested by Ms. Rashmi. Technical Specifications I want to make a rice […]

Filed Under: Power Supply Circuits Tagged With: 220V, Bulb, Lamp, Operating, Rice, Single

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 Tagged With: Bulb, Converting, Light, Ordinary, Rice, String

Transformerless Current-Controlled LED Bulb Circuits you can Build at Home

Last Updated on December 30, 2024 by Swagatam 274 Comments

In this post I have elaborately explained how to build simple transformerless LED bulb circuits using many LEDs in series and powering them through current controlled capacitive power supply circuit. Warning: Circuits I have explained below are not isolated from mains AC, and therefore are extremely dangerous to touch in the powered and open condition. […]

Filed Under: Lamps and Lights Tagged With: Bulb, Circuits, Controlled, Current, LED, Transformerless

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