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Author Topic: Second Stage Joule Thief Circuits  (Read 476935 times)

friendryan

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Re: Second Stage Joule Thief Circuits
« Reply #600 on: February 15, 2010, 11:51:57 PM »
I have read the first 25 pages of this post.....then I skipped around because I haven't seen anyone replicate the simple circuit this whole thread started from.....Wasn't it the OU prize? I saw some serious confidence about how simple it is, that it will be won so easily, and now I see that this thing is trying to run with diff parts, diff setup, and a whole lot of tangents away from it...so could someone save me the rest of the reading and let me know if anyone replicated this circuit and did the OU prize get won?...This has been going on for months and for such a simple OU design it sure seems like the rest of the other threads. Did anyone ever truly measure input over time vs out put over time...thanks......

mscoffman

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Re: Second Stage Joule Thief Circuits
« Reply #601 on: February 16, 2010, 01:48:12 AM »
@all
 a 60 watt is a bit more of a pain to light due to it's low resistance to light up .. once i get the ma's draw down and it is safer, i will post a good schematic.. but right now there r some safety issues.. or i just been having a bad couple of days..robbie

@Robbie;

You have an excellent point. Incandescent lamps have what is
called :"negative resistance". They start out at very low ohms
and only increase in resistance once they heat up. So they
have a high starting current...like AC motors. They also tend
to burnout during this time.

This is an unusual feature in electronics components
and can be used to help stabilise a system that has
voltage variations...the problem is it's hard to know
what their impedance is at any one time so they
are bad for determining exact wattage dissipation.
As well as their tendency to emit heat and IR rather
than light. So I like leds and CLF's, but they do form
an historical load experience base.

:S:MarkSCoffman

mscoffman

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Re: Second Stage Joule Thief Circuits
« Reply #602 on: February 16, 2010, 02:16:32 AM »
I have read the first 25 pages of this post.....then I skipped around because I haven't seen anyone replicate the simple circuit this whole thread started from.....


I agree with you, the fact is that experimenters don't often do very
good advertising...Every once in a while they should put together
a page of text and links pointing to their very best recent solution,
and statement in good English stating about what they think they
have accomplished, without this,  development become almost like
a secret, they don't want to brag about the results and they get
understated, and newby's are cut out. I guess the solution is to
continue to study the thread for a while. There *is* a JT circuit
schematic in the middle of this thread, that contains the JT
circuit with some additional circuitry. Just delete the additional
circuitry...and there it is.  ;) But it then doesn't tell you how to
wind the toroid, and Jeana controls the best toroid design.

The second problem is; This secondary microprocessor control
circuit is necessary to make the JT self running. That is, take
the JT's OU energy generated at time of use and restore it to
it's own battery as well as put excess energy into a supercap.
User Groundloop has done a really superb job on this control
circuit and this firmware. I'm sure he'll report his progress,
and you are right, once he does this I feel the circuit should
be ready ready for the "about one watt OU prize". Energy
has a time derivative so one can use a couple of 110V alarm
clocks to prove OU on you-tube. It has yet to be done
though.

:S:MarkSCoffman

kooler

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Re: Second Stage Joule Thief Circuits
« Reply #603 on: February 16, 2010, 02:58:09 AM »
i need to make my own thread.. even know they said i wasn't bother them
so i think i will make my thread called (koolers second stage joule thief circuits)
hahahaha.. ..
nah.. i will post somewere i am not getting in the way of their progress..

jeanna

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Re: Second Stage Joule Thief Circuits
« Reply #604 on: February 16, 2010, 03:01:20 AM »
Hi friendryan,
Welcome to this thread.

That circuit is only one of several that take a regular jtc or one with a secondary to a different level.
Kooler's circuit really qualifies for another level.
And, xee2's with the second transistor. etc

Have you made a few jtc's and a few with secondaries?
If not there is no time like now.

There are a lot of people around who know how to make them and how to do special things with them.
As far as I know, everyone is still following their interests and sharing their results.

Please join and share too,

jeanna

sirmikey1

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Re: Second Stage Joule Thief Circuits
« Reply #605 on: February 17, 2010, 04:28:17 PM »

Stiffler Video....
He calls this a "Big Heat Producer".
What kind of heat are we talking about here?

http://www.youtube.com/watch?v=jVNVAmxrFiM

Regards,
Mikey...

kooler

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Re: Second Stage Joule Thief Circuits
« Reply #606 on: February 18, 2010, 01:02:28 AM »
i think he is calling high voltage .. ( heat ) for some reason..

sirmikey1

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Re: Second Stage Joule Thief Circuits
« Reply #607 on: February 18, 2010, 08:58:17 AM »

Just a note, a heads up...
Davro Video, he is creating SEC receivers which are also "repeaters", have their own trigger coils.  I think this is a real biggie, unlimited current and current magnification.

http://www.youtube.com/watch?v=ZanIc5nS78A

M

sirmikey1

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Re: Second Stage Joule Thief Circuits
« Reply #608 on: February 22, 2010, 03:40:39 PM »
Kooler,

   Was thinking that your secondaries experiment might be a good opportunity to test one of those $15 ceiling fans on 1.5v.  The rotoverter uses both start and run caps.  You're the man...

   My Goldmine order should be here in the next day or so, will duplicate your filament bulb JT.

Mikey

kooler

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  • Posts: 471
Re: Second Stage Joule Thief Circuits
« Reply #609 on: February 23, 2010, 06:44:30 AM »
mikey
 i got something big coming soon.. if all goes well..
but i will have to post it somewere else .. in the forum..
or make a new thread.. cause it has 5 stages..
but this one i am going to get it near perfect before i post a schematic..
for safety reasons..
i will have to look up the rotoverter and see whats that about..
if you decide to light regular bulb the biggest feat is to get the amp draw down .. its like art.. it takes very fine detail..
out

robbie

sirmikey1

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Re: Second Stage Joule Thief Circuits
« Reply #610 on: February 23, 2010, 11:55:48 PM »

The JT evolves...

"Where's the Beef?"  ;D
http://www.youtube.com/watch?v=aISkVvi5iI8

Thanks,
M

Tassie Mike

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Re: Second Stage Joule Thief Circuits
« Reply #611 on: March 24, 2010, 10:59:51 AM »
Hi Ladies and Gents!

Just a thought about circuits, Please draw your own with ruler and good clean high contrast medium, sign it, scan it and then use a jpg to post.

So many difficulties with various computer drawings that will lead to mistakes that cost replicators time energy frustration and sometimes the feeling that they have been conned.

Cheers, don't stop innovating, specially you Jeanna!
 :)
Cheers all
Mike


NerzhDishual

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Re: Second Stage Joule Thief Circuits
« Reply #612 on: March 29, 2010, 11:20:21 PM »
Hi JT people,

Sorry, I have not read the zillions pages of the JT threads.
So, this could be off topic... :P

I have modified the Gadgetmall's 1.5 volt JT heater circuit:
http://www.overunity.com/index.php?topic=8334.0
Thanks Gadgetmall.

I can light 4 bright leds (or even more) and charge another AA batt.
I mean: the voltage of this (almost dead) second batt is increasing...
ex: 11.5 Volts to about 13 volts.
The voltage of the input batt is decreasing...
ex: 12.7 volts to about 12.5.

I will try to swap the batts and to self charge the input bat.

-------------------------------------------------------
Else:
How to measure the AL of a toroidal coil ?
Just wind few turns (N= 15 to 20).
Use an LCR meter to measure the inductance (L) of this coil.
Use this formulae L(nano Henries) = N*N * AL.
You will get a correct approximation of AL.

Very Best

mscoffman

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Re: Second Stage Joule Thief Circuits
« Reply #613 on: March 30, 2010, 05:56:18 PM »

...
I can light 4 bright leds (or even more) and charge another AA batt.
I mean: the voltage of this (almost dead) second batt is increasing...
ex: 11.5 Volts to about 13 volts.
The voltage of the input batt is decreasing...
ex: 12.7 volts to about 12.5.
...


@Nerzh,

By this quote do you mean: (A) "I use the exact same circuit for 12Volt
batteries"  or (B) "I placed the decimal point wrong; ie 11.5 = 1.15Vdc on
1.5volt battery"?

A) would be very hard on the Leds, IMHO.

NerzhDishual

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Re: Second Stage Joule Thief Circuits
« Reply #614 on: March 30, 2010, 07:27:23 PM »

Oops ! Yes, you are right. Sorry.
I meant 1.xxx volts the decimal point was misplaced.
Sorry again.

Very Best.