This is it !

[gmeast]

short of the mark

So, you make it , you do not buy it as finished product ?
If so, than teach me how to do that...But only if it would not be
annoying/bothering to you !!! It means, if you can illustrate this
procedure with one picture or one or two sentences ok, but if it
takes much explanations dont bother yourself with it, because we
have in this thread much more important things to do, dont we ?

Here's one I use. You can set 255 Ohms to 64,000 Ohms in 255 Ohm steps by flipping the switches in binary count. 2500 ohms would be SW 4 & SW 2 are off. That is, switch 4 is 2040 ohms and switch 2 is 510 ohms so 2040 + 510 = 2550 ohms ... really close to 2500 ohms and it 'actually reads' 2.563 KOhms on my DVM = 2563 ohms. When all the switches are "on", all of the resistors are shorted across and the switches that are "off" are the resistors that have been placed in series. All switches "on" 0 ohms and all switches "off" 65,000 ohms. I used a DIP10 because I had it. The array is only 8 resistors long (far right and far left not used).

http://02d1852.netsolhost.com/radiant/r_arrayfront.jpg
http://02d1852.netsolhost.com/radiant/r_arrayback.jpg

But I think it's best to do this on a little piece of circuit board or on a PCB Socket and plug your DIP into that, because the soldering can damage the switch ... I had to make 2 to get this good one. Others I've made are on PC board. As I said a variation of this can work for Capacitors too.

Thanks Greg for your teaching, but thanks even more for making me laugh,
i must put this smilie , that is how i looked like when i have read for
the first time above paragraph because i thought i was going to understand
nothing again...Maybe the best reason for this thought was this :
"waste not want not"what a heck does it mean again

It means if do not waste, time, materials, food, etc., then you will not want or need them (so much or so soon) because you will still have 'some left' from NOT wasting it in the first place (whatever IT is).

But the main part of making me laugh is this : You spend a lot of words to
explain me the verb or phrase or what ever it is how far do toroids fall
but even harder part of that sentence you did not explain to me, and that
is syntagma short of the mark which was the main reason of my
confusion
I remember how one american-english writer once said something like this :
English is the one of the easiest language to speak it bad , but in the same
time english is one of the hardest language to speak it well/good...Is that
right ? And when we add culture-part too to whole this language stuff where
we are ? Probably where all this misunderstandigs began in the first place :
Tower of Babel...Fortunately we do not have to communicate in french
Cheers!

The "mark" or the target, or the best one can expect, the intended goal, best quality ... in this case ... 'the best toroid that can be made' or really ... "how bad are commercial toroids for our research ... or will they even work?'

[gmeast]

Captret

Wow some very interesting things being done, that Captret thing looks awesome, I don't know how i missed that thread, excelent stuff.

I feel like i'm being left behind in a cloud of dust.

I'm still not sure I understand Stingo yet sucayho your mind works in mysterious ways, he's got me baffled. I think I might just try tinker with my Bedini SS to reduce the duty cycle.


Cheers

Aha found some trim pots they might do, back to Stingo .

Hi Farmhand,

I didn't know about the Captret either. Just went there ... WOW. So I went out into my utility trailer and found my box of caps. I grabbed a 16V X 60,000 Mf Cap. It's been in there for 4 months in a box. I measured it and it was at 3.9 VDC. So I shorted it. It sat all knight and came back to .3 VDC. So I charged it with a pretty dead 9 V battery and it came up to 7 VDC. I hooked up the o to (-) and now it's settling at 6.5 VDC. See the thread on this for more ... no more on this here.

Greg

[cikljamas]

Here's one I use. You can set 255 Ohms to 64,000 Ohms in 255 Ohm steps by flipping the switches in binary count. 2500 ohms would be SW 4 & SW 2 are off. That is, switch 4 is 2040 ohms and switch 2 is 510 ohms so 2040 + 510 = 2550 ohms ... really close to 2500 ohms and it 'actually reads' 2.563 KOhms on my DVM = 2563 ohms. When all the switches are "on", all of the resistors are shorted across and the switches that are "off" are the resistors that have been placed in series. All switches "on" 0 ohms and all switches "off" 65,000 ohms. I used a DIP10 because I had it. The array is only 8 resistors long (far right and far left not used).

http://02d1852.netsolhost.com/radiant/r_arrayfront.jpg
http://02d1852.netsolhost.com/radiant/r_arrayback.jpg

Well, i should not have been worried about these few sentences since
his author is such a skillful english talker...Thanks again Greg, i hope
i will try your system of connecting resistors one of these days...

It means if do not waste, time, materials, food, etc., then you will not want or need them (so much or so soon) because you will still have 'some left' from NOT wasting it in the first place (whatever IT is).
'

It means if i did not eat i would not want or need food at all...
Or if i did not sleep with women i would not want or need them at all..
Wow, i must try it , it sounds like OU...
But of course there is one deliberate overlook which is so much or so soon I changed it with at all to ridicule it a bit...
Anyway, i will never forget this phrase tanks to Greg...

The "mark" or the target, or the best one can expect, the intended goal, best quality ... in this case ... 'the best toroid that can be made' or really ... "how bad are commercial toroids for our research ... or will they even work?'

Wow, finally, i know the meaning of whole sentence HOW FAR SHORT OF
THE MARK TOROIDS DO FALL, cant believe, maybe untill know i havent been
aware of real extent of The Babel towers event consequences ...
Talking about toroids, i have one big toroid with awg 18 or even 16 ( i am
not sure) one side is 22 ac, other side i do not remember, but there is
sign rtg...Since i obtained it from unknown source i was afraid at
the first moment that it could be some old piece of some radioactive equipment, i do not have geiger counter so i can not check it, but as i
googled it seems that rtg means something completely different...
What do you think about that ?
I became to disassemble that toroid, it is like that one that bob boyce
showed in his presentations by the dimensions...
But i am wondering all the time why for example Sucahyo said that it
would be much more difficult to replicate Bob Boyce toroid than do
hex programing...Is it really the fact that Bob Boyce use some special
material for his toroid that is even kind of forbidden military material ???
And that wire is also made of some special material too ???
Are those things part of your concern regarding toroids or you have
something completely different in your mind saying HOW FAR SHORT OF...???

[cikljamas]

I made impulsator according 7imix drawing but the circuit drains more
than 1 A...So, something is wrong there i must say !
7imix, do you know what is wrong, maybe ?

[7imix]

I made impulsator according 7imix drawing but the circuit drains more
than 1 A...So, something is wrong there i must say !
7imix, do you know what is wrong, maybe ?

If you have a light bulb in there it's probably not providing enough resistance. Put a resistor along that leg to set the amperage you want it to draw.

Without an oscilloscope it will be difficult to tell if it is in tune, although measuring the voltage of the coil while adjusting the frequency of the impulser to find the point where the voltage is maximum will work.

[gmeast]

Here's the op amp impulser circuit I am experimenting with, and how I am experimenting with mashing it to stingo. This is still very much a work in progress, but it gets some interesting results.

I'm currently driving this with 5 volts. The light bulb in the circuit is just a small bulb.

I need to modify the op amp part of the circuit so that the frequency is adjustable, otherwise this is pretty useless...

Note that when using this with the stingo the duty cycle actually has to be as close to 100% as possible instead of as close to 0% as possible, because of the PNP transistor.

It just occurred to me that having the regular stingo potentiometer feedback from the end of the coil to the base of the PNP may help the impulse shut off faster. If it doesn't destroy the op amp.

Please share any interesting schematics of this that you have come up with too...

Unfortunately sometimes you have to put a bias in as either a pull-up or pull-down depending upon your driving output in order to crisp it up a little. This puts a load on the system though and we want to keep that type of thing to a minimum if we hope to keep the single battery approach for this charger. I usually throw a buffer of some sort in there too as the final output before the gate/base driver. That's what I'll do my U1D of my 2060D Quad (when they get here TOMORROW ! then I have to find time to work on it). I may put some gain on the U1D #4 to try and get an even steeper slope beyond whatever unity gain ends up as. The 2060's can handle 18VDC supply and are low power so the voltage may help.

[sucahyo]

Is it really the fact that Bob Boyce use some special material for his toroid that is even kind of forbidden military material ???
And that wire is also made of some special material too ???

That just what Bob Boyce feel people should have to replicate his.

Bob Boyce use low permeability toroid. Wire must not have twist in it since I recall the one with twist perform worse.

TPUist treat TPU toroid as delicate device. some TPUist (sorry I forget the name) mention that the sine wave output quality matter a lot too that using tube is much better than transistor.

Steven Mark do not even use battery for his TPU, but no one able to replicate it yet. The closest is Seike G-strain absorber.


Congratulation for clkjamas . Awesome result .

[Farmhand]

Hi all, gmeast I had a look at some toroidal transformers the other day, the one I looked at was about 6.5 inch diameter and was 220v primary with minus50v-0-plus 50v, very heavy "nice", I have no idea how they are wound though, I imagine the secondaries are wound in opposite directions. It would be a shame to unwind one just to use the core, i'm not sure i could bring myself to do that.

If you look in the Don Smith a review thread there is a very interesting picture of a setup in the document linked there, it's "BIG" and may be related to our pursuit, at least there may be something there to study.

I will have to order the 2060's, I like that resistor array too, that would be handy with caps aswell, good idea.

Regards all

[cikljamas]

Hi all, gmeast I had a look at some toroidal transformers the other day, the one I looked at was about 6.5 inch diameter and was 220v primary with minus50v-0-plus 50v, very heavy "nice", I have no idea how they are wound though, I imagine the secondaries are wound in opposite directions. It would be a shame to unwind one just to use the core, i'm not sure i could bring myself to do that.

I just did the same thing yesterday, but after i disassemble the secondary
my heart was broken and i left the primary...I just have written something
about that in the thread "stingo solid..." And boy, how i was pissed of
again disassembling that toroid, and it was not about winding at all, this
time. I can not imagine to wind this same wire back to that toroid...No
way !!!

[gmeast]

Hi all, gmeast I had a look at some toroidal transformers the other day, the one I looked at was about 6.5 inch diameter and was 220v primary with minus50v-0-plus 50v, very heavy "nice", I have no idea how they are wound though, I imagine the secondaries are wound in opposite directions. It would be a shame to unwind one just to use the core, i'm not sure i could bring myself to do that.

If you look in the Don Smith a review thread there is a very interesting picture of a setup in the document linked there, it's "BIG" and may be related to our pursuit, at least there may be something there to study.

I will have to order the 2060's, I like that resistor array too, that would be handy with caps aswell, good idea.

Regards all

Hi Farmhand and cik,

Thanks ... yes the cap and resistor array switches are very useful. I like them better than potentiometers & variable cap.

I got my 2060_D's today. I will be setting up soon. I am in the middle of building a heat recovery system for a laundromat's commercial gas heated dryers. It's a big project but will have a break from it soon while I wait for some parts for the ducting system, but I will set up a quick circuit so I can see the 2060's perform (not my final circuit though).

Greg

[Farmhand]

cikljamas, do not worry my friend if you leave the primary you can use that, for this we only want a single primary I think. How was it wound?

I just did the same thing yesterday, but after i disassemble the secondary
my heart was broken and i left the primary...I just have written something
about that in the thread "stingo solid..." And boy, how i was pissed of
again disassembling that toroid, and it was not about winding at all, this
time. I can not imagine to wind this same wire back to that toroid...No
way !!!

I'm not sure if it's been mentioned recently or not but the easiest way i found to wind a toroid, is to wind a fair amount of wire onto a pencil, close together like a long spring, then take the pencil out or leave it in whatever is easier for you, then as you thread it through to wind it you can uncoil the spring of wire as you do it with one hand, it's working for me with .7mm wire so far on a small 35mm toroidal core. It might be best to wrap something thin around the core so not to scratch the wire, i didn't do it though I think I should have.

Don't let your army of stingo's get out of control.

gmeast, or anybody, I have these things on this board what do these toroids do ? It's a big UPS board. I havn't tried to get them off yet, i'm worried I will break them.


Cheers

[pmazz850]

http://mazeto.net/index.php?action=d...0;attach=12032

Bob boyce tpu.pdf interesting reading.

[redrichie]

when I was wrapping multiple Joule Thiefs, or Joule Thiefs that hundreds of wrapps, I would wrap wire onto a thin rod(or pencil ) and use it as a bobbin to run through the center of the toroid. Just my 2 pennies

[gmeast]

very comprehensive

http://mazeto.net/index.php?action=d...0;attach=12032

Bob boyce tpu.pdf interesting reading.

Thanks for link. However, I always have a doubting reaction when someone says something like Boyce said about something getting "imprinted" on his body and all. But it is still good reading and I'm still NOT done reading it.

To everyone:

Are we going to accomplish anything by NOT phase-pulsing multiple windings on a toroid. What I mean is: are we actually going to see anything by just pulsing to a single coil toroid.

For our effort I think we may well see some COP>1 charging.

If you have studied the Rosemary Ainsley 'heater' she just pulsed (runaway mosefet) a wire wound power resistor. It is inductive if you pulse it. I guess when the mosfet 'runs away' (self oscillates) it is at a short enough 'effective' duty cycle that the heater (inductor, coil, resistor) doesn't saturate. That's an air-core coil, in effect. So I think that a commercial ferrite toroid transformer might work. I'm thinking about buying a universal toroidal transformer from Mouser ... 6" - low power $80 - $100 ... OUCH! But it has like 6 taps for various series or parallel transformer configurations. So in effect you could make it be one coil or a bunch ... they wouldn't be spaced by angular position though ... we're not trying to 'swirl' anything here though ... are we? Think its worth it anyone?


Greg

[Farmhand]

Hi gmeast,

So in effect you could make it be one coil or a bunch ... they wouldn't be spaced by angular position though ... we're not trying to 'swirl' anything here though ... are we? Think its worth it anyone?

No I think just pulsing a single winding should do the trick, like I said back earlier in this thread, i'm not that interested in OU, so I think I will leave it up to you more educated guys to do, I don't really understand these things so well, and I have batteries to fix. I don't think with my limited knowledge I could do any swirling even if I wanted to. I can hardly make stingo work.

Batteries is what I need at the moment. So I need to concentrate on fixing them for now.

Cheers