Joule Thief 101

[Magluvin]

https://www.youtube.com/watch?v=K53beWYdIpc

How to make an authentic Joule Thief. By BigClive


Clive is the guy that coined the term Joule Thief way back when and here he shows how to make a "real" one.


Bill

PS  He also gives a detailed explanation on how the circuit works.

Maybe we should call up Clive and see what he thinks about the difference of putting the led across the coil instead of the transistor?

At 7:45 in the vid he talks of a 'ringing' in the transformer.


Mags

[Magluvin]

So many claims MH,based around assumptions 

There is an easy way to test which circuit is more efficient-the first, or the second ?.

After taking into account resistive losses in the battery,do you still claim the first circuit to be more efficient?.
I now have a test bed,where we can accurately calculate light output per mW of input power.

What ya say MH--do you still stick with the first circuit as being more efficient?.


Brad

Well maybe we should have a JT distance run of 2 circuits, one with the led across the coil and one with the led across the transistor.  Use fresh, quality batteries to start and no base resistor to shorten testing time.

Ill wip up a board with 2 identical JTs and give it a go.     

See, I have an assumption about an assumption that I am assuming is assumptionless assumption.

Mags

[wattsup]

@ALL

It is really too bad that guys don't really want to talk about the real things. The real effect behind what you think is happening in that teeny weeny circuit called the JT no matter how it is designed. Can JT be short for Just Truth?

Well here are some small clues for those who are silently on their benches day after day and know better then to post on these threads. Smart Chickens. hahahaha.

1) Put a small resistance (CVR) between the emitter and ground and scope across it (yes take a differential on this one) while the circuit is running. What do you see? hahaha
2) Then explain to us how a transistor works in this circuit one more time and leave out any current flow jargon and think think think.
3) What does the diode inside that transistor do? Forget the forward bias crap if you did step #1. Think of the negative potential.
4) Then explain when the transistor closes and current is supposed to start to flow through the L1 to ground why is the L2 not energized?
5) Why is the L2 energized when the transistor is open? Don't give me any field collapse crap either. Just think it through. Field collapse are words used by people who don't have enough brainpower to realize how illogical it is. 

There are more but five are enough for now.

Field collapse, current flow, electron flow, flux, these are all illusions that you guys chew on every single day and all it produces is one big pile of you know what. Now count how many belief systems this little circuit is asking you to hold onto while the standard model is explaining all this dreamy fanfare.

You see, here is the major problem. You guys don't ask the right questions. Resonance in a wine glass just wasted your brains away while you drink EE Kool-Aid. One simple circuit and already everything is upside down and you wonder why our devices are not working at OU levels. How can they when we don't know how to play by natures rules and instead decide to follow man's rules. Oh, I forgot, we know better.

Look you guys, if you want to graduate into being the next local TV technician (my dad was so great so full respect) then by all means, follow @MH to the land of EE called Wallington. Why, because all it has are four walls and a thick roof. But if you plan on working towards OU devices, then this little shit fest won't cut it at all. But just forget it, it is always much simpler to pretend everything is fine and dandy.

wattsup

PS: I don't really care if guys prefer to ignore since this thread is being read by more then those who post here, so for me it is more important to just get it out there regardless. Just carry on and pretend I am not even here. @tinman, don't worry I won't bother you on your new thread. From now on, if you need anything that's not in the box, just PM me. I won't run after you any more.

[Pirate88179]

Maybe we should call up Clive and see what he thinks about the difference of putting the led across the coil instead of the transistor?

At 7:45 in the vid he talks of a 'ringing' in the transformer.


Mags

Yes Mags, I noticed that too...hmm....ringing.  That video is fairly recent too...I think within the past year.  The thing that amazes me to this day about "this simple circuit" is that it turns out to not be all that simple after all.

I do agree that we have seen many variants of the legendary JT circuit and I have no problem with them being called JT's.  I have used many different ones myself so, how could I argue?  I just wanted folks to see the original circuit from the guy that named it...even though he gave credit to a Russian guy for the design.  I really like how Clive graphed the battery depletion which really demonstrates the real purpose for this circuit.  That is what got me involved early on was to be able to use 90%+ of an AA battery instead of 20%.

It is a fairly long video but worth watching.

Transformer Ringing...hmm....


Bill

PS  Clive also talks about how the circuit will run way below the voltage level that it will start at.  I have seen this myself many times.  The circuit will self-fire at say .6 volts but not .4.  If allowed to run it will continue to oscillate down to .3 or so but it will not start that low.  That alone shows something is ringing around back and forth to keep it going right? I believe it was TK that demonstrated that the oscillations continue long after the led is no longer illuminated. I had never even thought to look for that.

[MileHigh]

MH
quote


When I make an assumption I am trying to be conscious of any problems or pitfalls associated with the assumption and I am trying to avoid them and make reasonable assumptions that will stand up to any reasonable scrutiny.

------------------------------------------
MH
You go way past assumption and declare _FACT_ things you are clueless about !

In this area ..you stand head and shoulders above the fray ,and routinely holler scam where you have
no experimental ,personal or any knowledge whatsoever.

I speak mainly Of LENR ,however most recently your claims on an ICE and  resonance are a blaring example !

you are a shameless Hypocrite .

Stop your ridiculous "hurt fanboi - bobbing duckie extreme" crapola.