# LED CHANDELIER

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I wanted to experiment with a lot of LED;s on AC mains, and this is the result.

I have used 160 white LED's for this project and it has been a success.

It gives a bright light and is suitable for the Drawing room, or the Dining room.'

You can have a Candlelight dinner without the candles.

Hang it from the ceiling and you have a decorative light. It is easy to make and is also cheap.

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## Step 1: STEP-1

List of parts.

1. Extra bright white LED's =160 pieces
2. Motorcycle Wheel SPOKES = 4 pieces
3. Perforated Hard board of required size = 1 piece
4. Stepdown Transformer 220 volts to 12 volts 1 piece of 2 Amps.(Used in Stereo Amplifier)
5. Male Electrical 2 pin PLUG = 1 piece.
6. Solder wire.
7. Connecting Electrical wires as needed.
8. Tools for Electronic wireing.

## Step 2: STEP-2

Use a piece of perforated hardboard for support and fix 5+5 LED's with the correct polarity as shown in the photo.

First bend the legs of the LED's and then Solder all the legs of the LED's as shown in the diagram.

4 LED's should be soldered at the centre to give supporting strength to the LED's.

After soldering all the 10 LED's push it out of the support hardboard.

Make 16 set of 10 LED's that is, in Total 160 LED's.

## Step 3: STEP-3

Follow the WIRING diagram as shown in this Photo.

Take care to maintain the Polarity at all times.

## Step 4: STEP-4

Take a 2 pieces of Hardboard of the same size and fix a wooden batten between them to make a thin frame.

Fix The Motorcycle spooks at 4 corners of the board.

Solder 4 sets of 10 LED' s on one side to the wire frame as shown in the photo, while maintaining equal distance for all the sets of LED's

Connect the 2 opposite ends of the wire frame with an electrical wire.

Fix the Transformer with nuts and bolts on the top side of the Hardboard frame.

Connect the Positive and Negative wires from the output of the Transformer as shown in the Photo.

Connect a 2 pin Plug to the input of the transformer.(220 Volts AC)

Fix 4 Nylon ropes at the 4 corners to hang the whole project from the ceiling.

Hang the thing, plug it in and your job is done.

Now you can enjoy a candlelight dinner with your loved ones.

## Step 5: STEP-5

Here in this step i would like to answer some of your questions..

There is a very minimum of flicker which is not noticeable because the pair of LED's are close together.

The flicker I get is as much as a 4 feet Fl. Tube light burning.

Runner Up in the
Party Like It's 1929!

Participated in the
Party Like It's 1929!

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## 222 Discussions

I was wondering when I saw the cube if you had angled the individual LEDs to try to give continuous coverage. Most LEDs I've seen only spread light over a 15 - 30 degree angle. I'm still trying to figure out the best way to do that in 2 dimensions. These spread light over 180 degrees but it's a band about 15 degrees high. I worked out the angles carefully and set them into some PVC pipes. All the LEDs are on, you only see light from a few at the proper angles. These are in sets of 3 in series running from 12 volts, each set has it's own CL2 current regulator holding the current at 20 ma.

Sir, what type current rating required? I mean to say 12V/__A.

Dear sir,
in between also is it to be soldered MEANS WHERE FIRST ROW AND BELOW ROW(2nd) WHERE THEY ARE CROSSING (top one to bottom 2 and bottom 1 to top 2 at this junction)
PL TELL I AM NEW TO THIS ELECTRONICS SIDE.

Very nice idea. I was thinking of something similar but caculating the number of LEDs to run directly at 260V (should be high enough to avoid spike damage).

I notice that all mains LED bulbs are only rated at 230V, when here in Oz we're 240V, which means the odd encounter with 260V is not uncommon.

4 replies

Truth is... A/C mains are all engineered to ABOUT 240 volts. 120/240/480 is the theoretically convenient figures with the way mankind engineered power generation. In the US, some things say 110, some 115, and some 120 volts A/C, but it is ALL SEMANTICS. My home measures 113 VAC, at my office, 116VAC... my office, by the way, it AT the power plant! heh heh

your issue in OZ is a matter of semantics still... 230, 240, 220, BAH! It's all the same and NONE are exact. the nature of the power systems doesn't require it to be exact. AC circuits dont need to be exact, and when we need more exact power for precision devices, we use DC circuits that are rectified, stepped down and regulated to the precise power needed, which is always WAY WELL BELOW the 120 or 240 volts from the mains...!

Hope this informs people... I know I had a EUREKA moment when I put it all together years ago!

Hi Treknology,
This is NOT run on 230 volts but through a transformer which brings down the voltage to 12 volts.
You can use a transformer of 240 / 12 volts.
then calculate the number of LED's to use in one line.
So, to find out what a transformer can support:

Measure its output:
- If it is AC, use the V-AC scale on your multimeter, and multiply the results by 1.4 to get V-peak
- If it is DC, use the V-DC scale read out V-peak.
The number of white (or blue) LEDs it can support is:
- Vpeak / 3.3 and round up to the next integer. (E.g 4.2 is 5)
(Use V-peak / 2 for Red, Orange and Yellow LEDs)
That is the number of LEDs you can put in a series to operate off the transformer safely.
For AC circuits, you will need to duplicate another chain in the opposite polarity.
LEDs can be any current, as long as they are all the same, and the transformer has the current (A or mA) to support it.
Note: AC transformers can also have a VA rating instead of amps - just divide that number by the volts to get amps.

I was aiming at maximum efficiency and longest life. The LED specs that I used for my calculation came up to 80 LEDs running on 240VAC as a single string consuming approximately 5W. I allowed up to 260VAC so that it wouldn't just blow out suddenly. That was using a bridge rectifier, or I could increase it 160 LEDs if I ran two strings in reverse to each other as you have suggested.

I certainly agree that if one wants room to play with the LEDs then ELV is pretty much compulsory. It would be so much easier and cheaper if we all used the 400VAC 400Hz standard.

Hi,

Wouldnt it be possible to make a series big enougf to connect it directly to 220V?

Nice work!

5 replies

Yes but risky,
230 x 1.4 = 322
322 divide by 3.5 = 92 LEd's.
92 LED's on + side and
92 LED's on - side
total 184 LED's are required to run it on 220 vols AC.

But sir if we add a bridge rectifier, we would only need 92 leds, right?
Also sir why did you multiply 220 by 1.4?

AC current is a plus minus thing, first it goes one way and then the other way. That is why all four legs of each LED's are connected at the center.

ok I have a question I get what to do with those three rows for the sides but what do you do for the bottom because I don't think you explained it?