Joule Ringer!

[Guruji]

Hello All, and everyone else:

My third winding on the ferrite yoke gives about 65v or so. Enough voltage that the neon lights on it, so does an ungutter 15watt Cfl, but only dimly. It would blow any of the small led bulbs. And it almost lights my 110v led bulb, but as that 110v led bulb has the internal circuit in it, it only blinks.
I did add a variable capacitor on to that third winding, or the light on the first secondary coil will go out. The meter may not be reading right, on this kind of pulsed voltage. In any case there is some strong current and voltage on it also. And tuning with an adjustable capacitor can adjust the frequency on it. The other bulb on the first secondary coil does not change in brightness, but the ringing does change in pitch.
If that third winding had more turns it would work better, mine only has about 200 turns, or so.

Nick_Z

Try third winding with same turns as on the base and then tune with the variable cap and see amperage input if it lowers down.
Thanks.

[b_rads]

In the first pic below, I am showing how I wind the yoke with multiple taps. Again, this yoke is really just a large ferrite torus. I first started doing this when working with the Lynx Air Coil Joule Lamp and this process has served me well.

If you have not seen the videos posted by Xee2, I highly recommend you do so. His channel is xee2vids. He has a series on his Joule Thief Lamp that is terrific. The second pic below is my replication of this series and Xee2 gives fantastic schematics and build instructions.
I mention this because the ferrite works much better on the SJR3 than does the RS Transformer. When time permits, I will build the Joule Thief Lamp using the ferrite and see how it performs.

This is probably my favorite inverter that I have built. In the picture, realize that this light is running off an AA 1.5v battery. I have this lamp connected to my laptop USB port and use it every time I am on the computer. I can also unplug the lamp and run any dc source from 1.5 to 12v without overheating. You need to experiment with resisters and capacitors to find the current and light that makes you happy. In my youtube channel “OUbrads” is a video posted in February showing this lamp with reference to Xee2 video. I think the name of the video is "Joule Thief Inverter Lamp" Enjoy.

Brad S

[hello_all]

Thanks brad I saw your video on youtube about USB lamp.. Ok now I made some changes added more wire and covered the whole yolk , it made wonders , heating is gone and I am getting 150 volt ac on led full bright .. Big light I think I am done with this project , time to look for a box .. This can run from as low as 1.8 watts to 7 watts for this led bulb ... For input volts works from 3volt to 12vot. Best works over 6volt . Will post video showing this range ... Which makes it portable light for night..

[hello_all]

Best part no ringing and no heat sink on transistor .. Luke warm after 10mins ..

[hello_all]

Here is the big light... Running on lipo.

[hello_all]

Brad and Nick as promised video: thanks a lot , this was my best project ever done..

Custom Joule Ringer ..works from 3volts to 12volts ..1.8 watts to 12watts - by Hello All - YouTube

This is modification to the Joule Ringer 3.0 , difference is i spent only $13 to build it , $10 for the bulb and $2.5 for the transistor , and rest of the stuff i had..
DIY best project ever.
Parts needed: TV yolk, 2n3055 transistor, 14 gauge speaker wire, 7.5 watts led light from Ultatech (40 watts equivalent)

No heat issues and no unnecessary tuning with caps and resistors required..

[hello_all]

My Edited Video - YouTube

the video from my phone was flipped here it is corrected

[Nick_Z]

Thank you for showing your results guys.
As my purpose is to develop a system to light my house, not just in an emergency or black out, but full time. So, with that in mind I continue to tinker, as there is no end to this, unless one wants to end it. But, there is still a lot more to learn and experiment on.
Peanut Butter has the Radio Shack 3 watt 12v transformer running 9 or more light bulbs, on his version of the 2.0 circuit. Unfortunately he took all his videos down, at least I think so, as I don't see them anymore. That is close to what I want to achieve with a 12v or 24v battery system.
Having some homemade storage batteries, charging from a big solar panel array would also be worth looking into building. Solar cells are going to be very affordable in the next few months to a year as the big manufactures are going broke from scamming us up to now.

I got the 2n3055 transistors from the U.S. now, so I'll have a better replication to work on.

Here is Djoko, lighting an 18 watt Cfl, which looks pretty bright to me:
Quote:
"I use 12V 6Ah Sealed Lead Acid battery. Running on around 1 Amp, the transistor stays cold to hold on with my finger. The Un-gutted 220V CFL 18 Watt. Ferite rod 10 mm dia x 180 mm length (this size only I can get here in my place, primary winding was 2 layers @ 365 turn (total 730 turn) using 0.4 mm mag. wire, secondary was 72 turn of around 1 mm solid electric wire. On the primary, overlap winding I used. Here is the picture on the coil".
(First picture)

Rgd
Djoko
2012-10-22

The second,third, and fouth pictures are of my 15watt halo florescent bulb along with a 110v emergency led bulb.

[hello_all]

Nick and Brad,

This is my hobby and it is very good build since it has things which work and many people here has showed on their channels.
But there are limitations to it to run on max wattage , overheat failure etc..

1st limitation : 2N3055 transistor (audio transistor) max rating and failure under the HV scenario due to inductor feedback.
manufacturer Vce Ic PD hfe fT
ON-Semiconductor[6] 60V 15A 115W 20-70 2.5MHz

The 2N3055 was designed for medium-current and high-power circuits
The 2N3055 is also popular amongst hobbyists experimenting with high voltage transformers. The horizontal output transformer from a CRT type TV can be driven using just two resistors and a 2N3055 in flyback mode, transforming a low voltage, such as 12 volts, into several kilovolts. The output is very low current, so there is a minimal chance of dangerous electric shock. However, the design is limited by the 2N3055's ability to handle this sort of circuit, and will overheat and quickly fail from the inductive voltage feedback spikes from the transformer. Hobbyists would, after gaining an understanding of high voltage, then move on to higher power circuits and transformers.

This is from wikipedia ..

I am looking for a transistor from TV crt driving circuit it will have maximum wattage handling capability. If you see my video i have one which shows all components of a TV in there must be a hv transistor.

Once done i can have it crank out the max out the windings and primary thick wires... that is my next step..

[br0ns0n77]

I was wondering about the same thing - if there was a transistor that could handle some real output without frying. Let me know what you find!

I picked up some holiday lights last night at Lowe's just to see how many would light. It was a strand of 25 LEDs, 2.4w and .02 amps. Had no problem lighting them with my alum lead battery, but could not get the strand to light with two C batteries - oddly enough. I did notice it took inducing the circuit with my multimeter set to amps to get the strand to light with the alum car battery. I think the draw is just too low to start on its own. I just touched the leads to the hv out and to the collector and it worked. The lights aren't that bright just because they are el cheapos (6 bucks). I will probably take them back, just wanted to see how bright they would get and if it would light them all. Below is a video.

SJR 3.0 Lighting 25 LED Holiday Lights - YouTube

[hello_all]

brian, those led bulbs are really tempting , i will get some colored ones from GE.

about the power transistor here are my findings , the 2N3771 power transistor is a good choice at 30Amps. NTE's replacement, NTE181, is an improved version of the 2N3771 and carries 90volts instead of the 40 volts and can dissipate 200W instead of 2N3771's 150W.

So a NTE181 is a good choice if u wanna expriment ... this is nice circuit for inverter and instead of the transformer , add the cores..

[phantomrenegade]

Hi guys, regarding the flickering bulbs, I changed my Transformer from 3A to 0.5A but the flickering stay the same, I use a 2.2uF electrolytic capacitor and 15K pot, my transformer is 12-0-12 to 0-110-220 transformer, any suggestions to remove the flickering? I used the SJR 2.0 schematics.

[hello_all]

Electronics Circuit::12V Power Inverter

this is a inverter based on the 2n3055 which can handle 300 watts but with replacement NTE181 it can handle 1kw ..

i think the transformer can be replaced with the yolk core and then let it go..

[phantomrenegade]

helloall
What do you mean by let it go? sorry for the noob question

[hello_all]

"let it go" - like when u raise your kids and let them go....