Joule Ringer!

[ratul]

3W 44 LED Schematic

I attached 3W, 44LED lamp Schematic which has wide range of operating voltage:80-240V AC.
Hope it will be helpful for joule ringer developers.

Regards-
RATUL KHAN,
BANGLADESH.

[totoalas]

I attached 3W, 44LED lamp Schematic which has wide range of operating voltage:80-240V AC.
Hope it will be helpful for joule ringer developers.

Regards-
RATUL KHAN,
BANGLADESH.

Thanks for the circuit
for off the shelf parts maybe we can use a busted cfl ckt removing the glass tubes and replaced with leds
still testing my sjr flahlight with min pot R out 59 v ac to a 220 v ac 5 w led lamp but with diode goes to 13 v dc going back to neg source battery 9 v dc square cell initial start 8 after 3 hours still 8v dc also one drained alkaline battery 6v went up to 7.2 v dc when place in series with pos source batt

totoalas

[Stephen Brown]

led bulbs?

Dear PhysicsProf,
Could you please tell us where you purchased your "cheap 36 led bulbs"?
I searched both threads here and at ou.com for the name of the bulbs you achieved the 104 lm/W.
They are the little acorn style. I can't find them anywhere.
Congrats and thanks in advance.
Stephen

[Herbie687]

I attached 3W, 44LED lamp Schematic which has wide range of operating voltage:80-240V AC.
Hope it will be helpful for joule ringer developers.

Regards-
RATUL KHAN,
BANGLADESH.

@Ratul - I very much appreciate that you posted this. Thanks.
Now we can all buy the stuff at digi-key for under $10 instead of buying more expensive bulbs. #CostEffectiveness

[PhysicsProf]

Dear PhysicsProf,
Could you please tell us where you purchased your "cheap 36 led bulbs"?
I searched both threads here and at ou.com for the name of the bulbs you achieved the 104 lm/W.
They are the little acorn style. I can't find them anywhere.
Congrats and thanks in advance.
Stephen

See attached -- best wishes
Steven J

[NickZ]

These bulbs may not be as efficient, I don't know, but they are much cheaper, and provide 280 lm = (93 lm/w), from a 3 watt bulb, at $2,50 each. They also come in many different wattages. Maybe someone would like to try them out, also.

12V/110V-220V 3W MR16/ GU10 Warm/Cool White SMD/RGB/SpotLight Lamp Bulb Lighting | eBay

[NickZ]

And these 5 to 7 watt 108 led bulbs, for $2. No I don't work for these guys...

B22/E14/E27 110V/220V Warm/Pure White 5/7W 108 /38 LED Corn Light Bulb Lamp | eBay

[jonnydavro]

Hi.I have been doing a few experiments with Lasersabers jouleringer today and using peanut butters idea of using a mains transformer greatly simplifies construction and you can make one of these from scrap in minutes
I re-jigged it a bit and instead of connecting the load to the negative rail,I connected it to the positive rail.To be honest I can't see any difference.
I made a simple light meter consisting of a light dependant resistor,taped to the 1w 240v led bulb and took an ohms reading when the bulb was powered by 240v and then, if you get the same reading using the jouleringer circuit,you are at mains brightness.Also using the home made lightmeter allowed me to see if any changes I made to the circuit were benificial.
This is a great thread.Cheap renewable lighting is a much needed resource,judging by some of the posts here and I hope the sharing of ideas makes it happen.Jonny.
Here is a vid of my test today.
Lasersaber Jouleringer variant and simple light meter - YouTube

[ehsanco1062]

These bulbs are not cheap but it can give 390Lum for 3w(130Lum/w)!!!
Three for16.49$

3 E14 Warm White 60 LEDs Spot Light Bulb Lamp Spotlight 3W | eBay

[Herbie687]

And these 5 to 7 watt 108 led bulbs, for $2. No I don't work for these guys...

B22/E14/E27 110V/220V Warm/Pure White 5/7W 108 /38 LED Corn Light Bulb Lamp | eBay

It just keeps on getting better and better.
Thanks for the find. These are what we need.

[boguslaw]

Very interesting Designing a Solar-Powered, Rechargeable Lantern for Developing Nations Using NI Multisim and Ultiboard - Solutions - National Instruments.
I would like to participate but that will be rather next year. My goal is "selfrunning" led light system powered by a minute recharging capacitor at various chosen intervals and then running from this precharged capacitor for a long time with almost 100% recovery. Just to let you be informed Unfortunately it's not on top of my "importance list" but only because I cannot free myself from the "master project duties" anyway I think you may find it interesting and also use similar method. Why it's the best ?

Reasons:
- battery can be small in size and capacity
- large farad capacitors are also small
- inverters in tiny size are possible to step it up from say 1V 3V or 5V
- the biggest part will be transformer I suppose but not bigger then a matchbox
- I'm almost sure it will work perfectly

What is the life expectancy of power LED if continuously lit ?

[PhysicsProf]

These bulbs are not cheap but it can give 390Lum for 3w(130Lum/w)!!!
Three for16.49$

3 E14 Warm White 60 LEDs Spot Light Bulb Lamp Spotlight 3W | eBay

"it can give 390Lum for 3w(130Lum/w)!!!" -- Buyer beware -- don't count on it! I have purchased about 20 LED bulbs from China, and NONE of them lived up to the lumens-output advertised on-line! Running on 120VAC mains, they were in the same range as what you can buy in the US (that I've found) -- around 55-to-70 Lumens/Watt.

Another example, a certain LED bulb from China was advertised at 262 lumens on one site-- but on another site, the SAME bulb (same # etc) was advertised at 162 lumens.

Conclusion -- you really cannot expect that the lumens advertised ON_LINE by Chinese companies (at this time) will be correct. If you find a bulb rated and sold at stores in the US or Europe, then I think you can better trust the Lumens listed on the packaging.

Hope this helps.

[ehsanco1062]

"it can give 390Lum for 3w(130Lum/w)!!!" -- Buyer beware -- don't count on it! I have purchased about 20 LED bulbs from China, and NONE of them lived up to the lumens-output advertised on-line! Running on 120VAC mains, they were in the same range as what you can buy in the US (that I've found) -- around 55-to-70 Lumens/Watt.

Another example, a certain LED bulb from China was advertised at 262 lumens on one site-- but on another site, the SAME bulb (same # etc) was advertised at 162 lumens.

Conclusion -- you really cannot expect that the lumens advertised ON_LINE by Chinese companies (at this time) will be correct. If you find a bulb rated and sold at stores in the US or Europe, then I think you can better trust the Lumens listed on the packaging.

Hope this helps.

Hi physicaprof

Thank you for the explanation yes that explan every thing although it's not easy to find agood quality even here in Sweden , one of these led bulbs will cost more than 30$ here and you can imagine how much it will cost the USA one or the Japanese one and our markets filled with chinese staff .

Ehsan

[NickZ]

The bulbs that I linked previously are cheap enough that even though they are not very accurately marked or evaluated lumens/watts wise, one can just add or use one or two bulbs more, as practically no more energy is consumed by their addition. At a couple bucks a bulb... the more the merrier.
It takes a certain amount of bulbs to get the needed draw. As the load drawn becomes part of the circuit.

[Peanutbutter29]

Been playing a bit as I'm still waiting on one piece for the MC (5 weeks, argh!). Found some goodies though.

It was asked early if we could use strings of LED's with a circuit for these SJR's, well it seems you can. I've noticed a few companies doing pretty much that to save cost. I show then a highly modified Foreign bulb as further verification. I believe I cover the aspects of making a circuit. It's pretty simple, output electrolytic needs to be larger and input cap determines frequency, power and light. Anyhoo, I believe it was Jules that had first asked this; I can finally say with certainty, yes you can and here's how.
Super Joule Ringer w/ Modded Foreign bulb 1.6w & Yes you can! - YouTube

Second, running same bulb to see what the maximum possible lumens might be and to help with reverse calibration. I was curious here if the bulb could even produce the 250 odd lumens at all. Seems it can, but at a higher power, similarly noted when running utilitech at full output. Take your pick on lumens .
Foreign Bulb Max Output and reverse calibration validation - YouTube

Last, since some are wondering about measuring Power output rather than light; I believe that can be done easily. All of the circuits I've looked at so far output a filtered DC, and can be measured with instantaneous measures. I set up a simple experiment (with the stripped down minimum circuit) to see if that too was DC. Sure enough it is! For those wanting to estimate Power out to LED (after all circuits) this is the way to go. Be sure to use an RMS meter for A/C check.
Simple "How to" measuring power out with Super Joule ringer. (for any bulb) - YouTube

Thanks
PB