• Skip to main content
  • Skip to primary sidebar

Homemade Circuit Projects

Need circuit help? Post them in the comments! I've answered over 50,000!

Blog | Categories | About | Contact | Calculators-online
You are here: Home / Lamps and Lights / Capacitor Based LED Tubelight Using 1 Watt LEDs
warning message: electricity is dangerous, proceed with caution
LED TUBE FINAL

Capacitor Based LED Tubelight Using 1 Watt LEDs

Last Updated on March 13, 2019 by Swagatam 36 Comments

In this post I have explained the construction of a homemade 100 watt capacitive tubelight circuit using 1 watt LEDs. The idea was requested, constructed, tested and verified by one the avid readers of this blog Mr. Tamam. Let's go through the entire discussion.

Table of Contents
  • Discussing the Proposed The Design
  • Using an Inductor as the surge Suppressor

Discussing the Proposed The Design

I regularly visit your blog, and so far I have constructed several circuits from you blog. It's been a long time I am trying to build an AC LED Tube light which will run at 220-240 VAC and produce more or at least equivalent light as like a 60 Watt regular tube/florescent light, because I want to replace my room's tube light which annoy me always. I like LEDs very much because of their low power consumption rate and high brightness. 

I have already seen several circuits related to AC LED lights on your blog, but none are fit to my criteria.

 My Requirements:

1. I will use 1 Watt LED (3.3V, 10mm, 180 degree) a number of maximum 100-150 piece.

2. Power Supply will be Capacitive Type with maximum protection as far as possible. I don't want to use transformer.

3. Output light has to be bright as much as a regular tube light (60 Watt) like I said above.

 I know it's easy for you to design a circuit considering above requirements.

I badly need the circuit, its my humble request to you, please take time and design the circuit for me.Sorry for my bad English & Thanks in advance !! 

My Reply: 

I appreciate your interest, I already have the requested circuit in my blog, please check out the following link:

https://www.homemade-circuits.com/2014/04/simplest-100-watt-led-bulb-circuit.html

Feedback!

Thank you for your reply. Sorry to bother you bro, I don't understand "SMPS types NTC thermistor"

Even my local spare parts dealers did not understand. All they asked me for a value in Ohms for the thermistor, is the termistor compulsory for the circuit?

Because, I assembled and tested your circuit in project board successfully without the thermistor. If it is not compulsory then I wont use it.

Using an Inductor as the surge Suppressor

My advise is that you explain the dealer by saying that you want a thermistor that are normally used in 12V smps adapters. I am not sure about the exact ohms so can't suggest it correctly.

Alternatively you can simply eliminate the NTC and use an inductor directly in series with the LED chain, this inductor could be made by winding a magnet wire (super enameled copper wire) over any ferrite core, use 100 turns of it with 10mm diameter.

The data is not critical could be a little here and there, we simply need a coil having a resistance of 10 ohms in series with the LED...that's all.

Building the Prototype

Thank you for providing your 100 Watt LED Circuit.

After some trial and error I have successfully built the circuit but slightly modified your circuit as below:

1. I have used total 96 nos. of 1 Watt high bright worm white LEDs.

2. I have changed the value of the AC capacitor in your circuit from 5uF/400V to 14uF / 400V (After putting total 4 nos. of 3.5uF capacitors in parallel) as I am not getting sufficient light with 5uF/400V.

I used bleeding resistor rated 1 Mega Ohms between leads of capacitors.

3. I have also changed the Filter capacitor next to bridge rectifier from 10uF/400V to 100uF/400V and added a bleeding resistor rated 470 Kilo Ohms across its output.

4. I have put a Varistor between incoming AC Neutral and Phase to the circuit.However, I am posting some images of the project. 

High bright homemade LED tubelight using 1 watt LEDs

LED tube is more brighter than normal CFL tubelight

96 watt compact LED driver circuit PCB

The following image presents PCB design layout for the above 100 watt LED tubelight circuit, Courtesy Mr. Abu Tamam.

100 watt PCB layout

 

You'll also like:

  • 1.  Converting Ordinary Rice Bulb String Light to LED String Light
  • 2.  RGB Spot Light Generator Mixer Circuit
  • 3.  3D Moon-Sphere LED Driver with Charger and Dimmer Circuit
  • 4.  Automatic Door Lamp Timer Circuit
  • 5.  High Efficiency Li-Ion LED Driver Circuits Explained
  • 6.  Smart Emergency Lamp Circuit with Maximum Features

Filed Under: Lamps and Lights Tagged With: Based, Capacitor, LED, LEDs, Tubelight, Watt

About Swagatam

I am an electronics engineer and doing practical hands-on work from more than 15 years now. Building real circuits, testing them and also making PCB layouts by myself. I really love doing all these things like inventing something new, designing electronics and also helping other people like hobby guys who want to make their own cool circuits at home.

And that is the main reason why I started this website homemade-circuits.com, to share different types of circuit ideas..

If you are having any kind of doubt or question related to circuits then just write down your question in the comment box below, I am like always checking, so I guarantee I will reply you for sure!

Previous Post: « Underwater LED Boost Converter Circuit with Dimmer
Next Post: Greenhouse Motorized Water Diverter and Humidity Controller Circuit »
Subscribe
Notify of
guest
guest
36 Comments
Inline Feedbacks
View all comments

Primary Sidebar

circuit simulator image

Subscribe to get New Circuits in your Email

Categories

  • Arduino Projects (90)
  • Audio and Amplifier Projects (132)
  • Automation Projects (17)
  • Automobile Electronics (101)
  • Battery Charger Circuits (84)
  • Datasheets and Components (105)
  • Electronics Theory (140)
  • Free Energy (38)
  • Games and Sports Projects (11)
  • Grid and 3-Phase (19)
  • Health related Projects (25)
  • Home Electrical Circuits (12)
  • Indicator Circuits (15)
  • Inverter Circuits (89)
  • Lamps and Lights (142)
  • Meters and Testers (71)
  • Mini Projects (46)
  • Motor Controller (64)
  • Oscillator Circuits (28)
  • Pets and Pests (15)
  • Power Supply Circuits (89)
  • Remote Control Circuits (50)
  • Security and Alarm (64)
  • Sensors and Detectors (103)
  • SMPS and Converters (31)
  • Solar Controller Circuits (60)
  • Temperature Controllers (42)
  • Timer and Delay Relay (49)
  • Transmitter Circuits (29)
  • Voltage Control and Protection (38)
  • Water Controller (36)

Other Links

  • Privacy Policy
  • Cookie Policy
  • Disclaimer
  • Copyright
  • Videos
  • Sitemap

People also Search

555 Circuits | 741 Circuits | LM324 Circuits | LM338 Circuits | 4017 Circuits | Ultrasonic Projects | SMPS Projects | Christmas Projects | MOSFETs | Radio Circuits | Laser Circuits | PIR Projects |

Social Profiles

  • Twitter
  • YouTube
  • Instagram
  • Pinterest
  • My Facebook-Page
  • Quora
  • Stack Exchange
  • Linkedin
  • Recent Comments

    • Swagatam on Simple Buck Converter Circuits using Transistors
    • David on Simple Buck Converter Circuits using Transistors
    • Swagatam on Clap Switch Circuits with Relay ON/OFF: [Tested]
    • Mark on Clap Switch Circuits with Relay ON/OFF: [Tested]
    • Swagatam on Boost Converter Calculator

    © 2025 · Swagatam Innovations