Joule Thief

[xee2]

@ALL

I just finish testing my micro tpjt i get 20 volts from 11 turn pickup coil on the inside and 27 volts from 11 turns pickup coil on the out side.

There is also a picture of one bulb on a battery and one bulb on the pickup coil connected in parallel , it seems to be brighter in the secondary.

Mark

Ist has no place here ... ignore is a blessing

Wow! Amazing. Yeh, I know I said that before, but it is still true. Thanks for posting your results.

[altrez]

@all

I am looking for a LED bulb that works with the JT. I found one at walmart and its bright but it pulls 500ma and only has 12 leds?! Anyone know of a good bright one that might pull less then 100?

Thanks!

-Altrez

[jeanna]

Wow MK1,
This is really cool...pretty too!

@all

I am looking for a LED bulb that works with the JT. I found one at walmart and its bright but it pulls 500ma and only has 12 leds?! Anyone know of a good bright one that might pull less then 100?

Thanks!

-Altrez

Hi Altrez,
First welcome back!

I have a 20 leds bulb that I get from wallmart made by Lights of America which probably draws 100mA, but 100mA at 1.2v is very little power, especially since this bulb was made for utilities power which is 110v etc.
20leds in series is a lot of light and it is a lot of light for 100mA running from the secondary of a jtc.
If you watch some of my videos you will see how I have used this.
I know you are way behind, but I am about to be. When I return in 2 weeks you and MK1 and kooler and omg well there is no sense in stressing...
here is one I made to show how I was putting this into a bulb but modifying it first.
http://www.youtube.com/watch?v=Hc2B2rzthoA

Then
http://www.youtube.com/watch?v=4gj7IFCXw9Q
which lights 3 of these UNmodified  from a secondary, and it has a really big toroid.

I have even made the movie for the one that shows my jtpu (joule thief power unit, not jeanna's tpu  )
Which is a stand alone circuit in a box with a commercial on off switch and a regular plug. You can plug a lamp into this and light an unmodified 20 leds bulb in that lamp. And, you can even add another lamp because both will go on with the switch and plug. I posted some stills when I first made it, and my camera was doing terrible things the day I tried to make the tube video so it is not up yet.

You will need around 35-=400spiky volts to do this. I made it with the single AAA and it works well, but to read by the lamp, I am using 2 AA NiMH at 2.84v.

So, the short answer is yes.
Doesn't that make you smile?
,
It does me,
I will re-post 2 pix of this.
Notice the snaggle of wires which are plugging into this 'jtpu'


jeanna

[jadaro2600]

@ALL

I just finish testing my micro tpjt i get 20 volts from 11 turn pickup coil on the inside and 27 volts from 11 turns pickup coil on the out side.

There is also a picture of one bulb on a battery and one bulb on the pickup coil connected in parallel , it seems to be brighter in the secondary.

Mark

Ist has no place here ... ignore is a blessing

Could you try something - it may seem complicated, but if you could place a neomag inside that coil in such a way as to allow it to 'bounce' ..for instance, on a rubber band, or glued to some stretched latex, I think the micro variations may boost voltage.

[kooler]

@all
these are cheap looking and feeling.. but are just as good as my 200$ multimeter but they are NOT auto range.. they are very nice and small with large display for only 8.00 $

http://www.goldmine-elec-products.com/prodinfo.asp?number=G17407

plus you get a transistor tester and a 3v modified sine wave output setting also..


robbie