Joule Ringer!

[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.

[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 ?

[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.

[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

[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

[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

[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

[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

[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

[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

[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

[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.

[SkyWatcher]

Hi folks, Hi harvester, lately I've been using a 555 timer and a mosfet with a 7 strand - 24 gauge coil with ferrite core.
This way I can vary the pulse width and frequency and duty cycle.
I have noticed with this 555 setup, that you can charge the same voltage battery off the diode flyback, though the frequency needs to be very low, like below 60hz, i used around 10 hertz and a decent size pulse width, then the charge battery receives a solid charge and not a fluffy one.
Of course, the amp draw then needs to be higher for each pulse, though the average is lower since it's a very low frequency.
In my experiments with solid state, I never had much luck charging the same voltage battery with high frequency.
I normally use my 13.8 volt-10 amp power supply to power these radiant pulse chargers and this charges 12 volts very well at higher frequencies.
peace love light
tyson

[Harvester]

I don't like saying this, but at this point, you are talking Bedini Basics 101.

Well, already mentioned having done the 1 Ohm test and said "Or do you pick lowest amp draw for highest charge?" as done with the SSG.
The SS SSG seems to be different kind of an animal though.

Some say 60Hz is good, others say you need at least 10KHz.
Others again say 50-200Hz is good and that higher frequency sometimes is not better.
Looking at some normal SSGs, people use 16 magnets and have ~142rpm.
Then you have others who swear by 8 magnets only - guess the diameter also plays a role.

Then you have people using too much input current on their SS SSG which apparently reduces it to a normal charger - around 4A if I remember correctly.
Then you have people using 350mA input on their SS SSG, which charges really quickly, but the charge is only a fluffy charge.
Then you have people using 19V input source to charge 12V batteries.
My circuit already generates 650V. Do I really need more?

I have read so much in so many different threads, that - at the moment - I have no idea what is best.

PS. Have used a 19V power supply, and the charge is a lot better at 1A than with 12V input.

I did take the schematic for the SS SSG from this thread, but might not be the right one to discuss this in.
Will try and find the right one.
Thanks for all your help.

[100mpg]

At 120 volts, the Jr 2.0 lights the single bulb at 200 ma with 2450 Lux. The eight bulb cluster draws 300 ma with 450 lux. Divided, then multiplied times
eight equals a ratio of 12 Lux to ma. The single bulb a ratio of 10.25.

Voila, an increase in efficiency with the eight bulbs of around 20%. Half the 40% increase rate measured at twice the voltage!

I wonder how Lidmotor will react to these measurements?

@Herbie,

Can't wait to see your new video!

I like those numbers! I have several multi bulb light fixtures in my home including an eight bulb over the mirror in my master bathroom. However I will be using a ecosmart 8.6 watt light bulb so I am assuming I will need to change parts togett it to balance correctly & be as efficient as the circuit you have. Can anyone please explain the math behind balancing the circuit so that the parts won't get hot.

Thanks.