This is it !

[Farmhand]

Hi pmazz, No I haven't tried there but I will, thank you very much. I can't do much till I get it.

Thanks for that.

[Farmhand]

Hmmm Pmazz, when I look at this page, it says that they have AWG 16 and 20 in stranded and 1 cond shielded PTFE but out of stock in AWG 20.

Wire

Then further down it says this,

98% of the PTFE wire stocked is stranded but do have Solid silver plated copper PTFE in 22, 20, and same price as above

And there is also "Solid Core PTFE wire".

What is "Solid Core PTFE wire" is that the stuff without silver coating ?

It's a little bit confusing to me, i'll have to check it out and contact them before I order.

Thanks for the link, you probably already supplied it before and I missed it, that wouldn't surprise me, so sorry if so.

Rgds

[pmazz850]

I think PTFE is the insulation on the wire. The solid core is what you want, not stranded. 16 gauge for the secondary(if your going to wind one) and 20 gauge for the primary. You will need about 100 ft.

Hope it helps!

[gmeast]

mosfet gate driver

Hi Greg, I just realised what I actually wrote a couple of posts up.



That was a silly statement by me, we have to power everything, from the same source doh. I bet you got a good laugh out of that.
.................................................. ............................
Cheers

Well, first I cried then I laughed hysterically and pulled out all of my hair. So, we aren't ever going to do that.

I am going to have to change my gate driver methods. My gate signal is squishy coming from the divider network as shown in my circuit diagram. I will need to use a more conventional and more sophisticated driver like this:
http://02d1852.netsolhost.com/radian...ate_driver.JPG
plus other stuff that need gluing on. Even more, If I want to continue using the logic-level Fet I am, then I will need to run this driver up against ther rails of a 5VDC regulator so it is a solid gate signal. I hate this because of the added overhead. It will, however, reduce the balancing I'm doing right now between the offset and pulse width pots ... a real pain. Maybe I just need to go with the standard power mosfet and drive the gate to the battery rails, but I know they are ringing from the charging pulse so maybe that's bad and the 5VDC regulator is good. Dunno' ... suggestions welcome.

I'm placing an order for some of this stuff soon and these new parts will be part of that order so if any can suggest something soon, I'm open, and NO expert at Mosfets ... glad though I got things running as well and as simply as I have so far.

I Don't want to do anything wrong on my toroid. I know I should NOT use any glass reinforced tape. So I need to know what I CAN use and what NOT to use past what I already know. I guess I should put a first layer of tape on the Core preceding the secondary wrap ... yes .... no ... Boyce did it and so did watkykjy. This toroid is to be the CONSTANT for this replication ... to be exactly the same as the one prescribed by Boyce and domo'd in the video ... it's got to be right so It can't become a reason for contention or argument. It's part of the scientific method approach, ya know?

Merry Christmas. Later

[Farmhand]

Yes thanks pmazz, PTFE is TEFLON so I just found out. I'll contact them about those wire sizes. Ta.

Greg

Maybe I just need to go with the standard power mosfet and drive the gate to the battery rails, but I know they are ringing from the charging pulse so maybe that's bad and the 5VDC regulator is good. Dunno' ... suggestions welcome.

That is my concern, the ringing or spikes effecting the drive signal. I think I have a similar problem with my dual fet desulfator, as soon as I increase the input power from almost minimum the trace gets twitchy, I put it aside to think about it, maybe it will fix itself if I wait a while. That is a slightly different cause but similar effect.

This page has some fairly complex gate drivers,
Desulfator Variations and Examples
a very similar one to what is on the desulfator circuit, is there but it's on a 555. Most of the MOSFET drivers there are using TL494 chips whatever they are. But the gate driver methods could be adapted for op-amps I think. I am curious to try some different ones when I get a scope that can actually make measurements. Otherwise no real point.


We will work something out, the circuit I refer to is the second 555 version, it shows an "optional I think" cap and resister around the Pulse Generator output diode. I think that is to maintain the pulse width or something not sure, that is interesting, i'm thinking of installing a cap and resister there on my twitchy desufator to see what happens. If and when I do i'll let you know.

I would put a wrap of tape on the core to start, Bob does a good winding tutorial, I will follow that but without all the extra bias windings, they are something he is experimenting with as far as I can tell.

I Don't want to do anything wrong on my toroid. I know I should NOT use any glass reinforced tape. So I need to know what I CAN use and what NOT to use past what I already know. I guess I should put a first layer of tape on the Core preceding the secondary wrap ... yes .... no ... Boyce did it and so did watkykjy. This toroid is to be the CONSTANT for this replication ... to be exactly the same as the one prescribed by Boyce and domo'd in the video ... it's got to be right so It can't become a reason for contention or argument. It's part of the scientific method approach, ya know?

Yes thats true, as well as that, since we have already invested the money, if we wind it good "with a secondary" we can use it as a transformer aswell. It could have three or four uses. That would be awesome. How much current can a piece of 16 AWG take, i'm guessing 50 amps or so, not too much? How much do they use making hydroxy ?

I would hope after we nail the self charging battery to the wall we can go on to perfect a "up to half KW device" running from a single battery.

One could do a bit of work with 50amps. Especially when charging batteries.

Happy Christmas

Edit. The totem pole drivers towards the bottom are the really interesting one's.

[Farmhand]

Oh yes I see, the small drawing you posted is in there, if you go to the bottom then go up to the fourth drawing, it is in the top left corner of that. We should be able to rig something up that will work.

Now I am actually starting to learn something, and understand.

Not sure about the tape, that winding tape just looks like yellow packing tape "packing tape is brown" I think it is teflon so normal packing tape might do if it's the same material. Won't look pretty though. I don't think it needs to be yellow, I won't be losing mine.

Cheers

[Farmhand]

Gate Drivers

This is the one I was talking about. Might be adaptable. I will try to build this one tonight, I have the required componants I think. I will make a CMOS pulse generator to try it with.
http://9xhxlw.bay.livefilestore.com/...ter.jpg?psid=1

And if we ever want to put a sine wave through our toriod one day, we could maybe use something like this. I think it is a D Class Amplifier, but it looks too simple.
http://9xhxlw.bay.livefilestore.com/...ier.jpg?psid=1

The two "Don Smith Boxes" my arrows point to are probably serve these two different but usefull functions.

Cheers

P.S. I think maybe for a normal MOSFET (ie. not logic level) just leave out the 5.6 volt zener. I hope, I've got logic level fets. I'll try it with first. Actually it might be better for a normal fet to change the 5.6 volt zener to an 11 volt one. Ensuring the 10 volts for full gate charge. Again I hope that would be the correct thing to do. Just unedjamacated gesses.

[7imix]

Well, first I cried then I laughed hysterically and pulled out all of my hair. So, we aren't ever going to do that.

I am going to have to change my gate driver methods. My gate signal is squishy coming from the divider network as shown in my circuit diagram. I will need to use a more conventional and more sophisticated driver like this:
http://02d1852.netsolhost.com/radian...ate_driver.JPG
plus other stuff that need gluing on. Even more, If I want to continue using the logic-level Fet I am, then I will need to run this driver up against ther rails of a 5VDC regulator so it is a solid gate signal. I hate this because of the added overhead. It will, however, reduce the balancing I'm doing right now between the offset and pulse width pots ... a real pain. Maybe I just need to go with the standard power mosfet and drive the gate to the battery rails, but I know they are ringing from the charging pulse so maybe that's bad and the 5VDC regulator is good. Dunno' ... suggestions welcome.

I'm placing an order for some of this stuff soon and these new parts will be part of that order so if any can suggest something soon, I'm open, and NO expert at Mosfets ... glad though I got things running as well and as simply as I have so far.

I Don't want to do anything wrong on my toroid. I know I should NOT use any glass reinforced tape. So I need to know what I CAN use and what NOT to use past what I already know. I guess I should put a first layer of tape on the Core preceding the secondary wrap ... yes .... no ... Boyce did it and so did watkykjy. This toroid is to be the CONSTANT for this replication ... to be exactly the same as the one prescribed by Boyce and domo'd in the video ... it's got to be right so It can't become a reason for contention or argument. It's part of the scientific method approach, ya know?

Merry Christmas. Later

Thank you for posting that diagram. That's how I was imagining having a stingo in the circuit to increase the sharpness of the pulses... It's cool to know that using the pnp and npn in that way is a known technique.

I think I am using a power MOSFET and it is working quite well... Nte66 or nte67. I haven't made a video yet because I am still tuning and need to figure out what to show in the video. I'm getting interesting results. Still haven't found my choke but I should today. I was able to charge a cap with an av plug at the top of the coil, but not very well and I don't think the output ofnthe av plug looks the way it should. I don't think my diodes are fast enough or high enough voltage... Not sure.

I agree that it would be best to have the toroid be constant, but I can't afford it right now, so I am going to come up with a whacky home made toroid.

Merry Christmas! I had a great one this year.

[gmeast]

teflon

I think PTFE is the insulation on the wire. The solid core is what you want, not stranded. 16 gauge for the secondary(if your going to wind one) and 20 gauge for the primary. You will need about 100 ft.

Hope it helps!

PTFE = polytetrafluoroethylene = PolyTetraFluoroEthylene ... yeah it's the insulation

[gmeast]

longitudinal windings

Hey,

Are we supposed to be winding longitudinal windings with magnet wire ALSO on these cores? you know, outside dia, inside dia, both faces (flat windings) or is that just for his TPU?

Ok ... got my answer on the tape wrap ... I don't think the 2-in tape they sent me will lay down nicely. Why didn't they send 1-in tape. Gonna' get some from Loadstone I hpoe.

Which complimentary pair of transistors should I use for the gate driver? Are 2222/2907 fast enough or should I use a something faster ... how fast are they enayway. You know their data sheet don't really say much.

Just rambling ... Later.

[Farmhand]

Hi all, Sorry guys I had to have a good sleep, run down I was.

I have the same opinion as you greg the 2 inch tape is too wide to be really neat, narrower stuff would be better.

Those transisters are pretty quick http://9xfdag.bay.livefilestore.com/...eed.jpg?psid=1

Fairly good gain too. I was going to try it like this last night. But I didn't get time. I have MPSA06 and MPSA56. the 2N2222 and 2N907 are likely better than those I have to study the datasheets properly yet. I was going to try a 0.001 uf cap on there.

http://9xfdag.bay.livefilestore.com/...ter.bmp?psid=1

Believe it or not the Biblical rain continues, all this water could not possibly be up there. Something funny is going on. Unbelievable. More mopping for me. There is so much water it's coming up out of the ground through my concrete slab to flood the floor. OMG Hahaha What a mess.

Cheers

The longitudinal windings is optional, I think Bob is just doing some Tesla theory experimenting with that. Good idea not sure how it would work though.
He most likely has lots of toroids so did the longitudinal windings when he wound a new one for the winding tutorial. He probably figured he would show the pics since he did the windings. I am not going to do that. If I get really good results from my first one I will likely buy another to try Bobs longitudinal windings.

[gmeast]

driver

Hi all, Sorry guys I had to have a good sleep, run down I was.

I have the same opinion as you greg the 2 inch tape is too wide to be really neat, narrower stuff would be better.

Those transisters are pretty quick http://9xfdag.bay.livefilestore.com/...eed.jpg?psid=1

Fairly good gain too. I was going to try it like this last night. But I didn't get time. I have MPSA06 and MPSA56. the 2N2222 and 2N907 are likely better than those I have to study the datasheets properly yet. I was going to try a 0.001 uf cap on there.
.................................................. .................................................. .......... OMG Hahaha What a mess.

Cheers

Sorry about your mess. What is the 5.6V Zener for? Is this driver for a logic-level Fet?

Thanks

[Farmhand]

Sorry about your mess. What is the 5.6V Zener for? Is this driver for a logic-level Fet

Hi Greg, Yeah thats the impression I get, 5.6 volt zener I think would be just a safety measure for the mosfet (I think). Maybe it would work without it I dont see why not, and of course resisters could also be used as they normally would. I would try it on a solderless board to experiment changing things but I am still in a battle with nature ( Thunder Storm before lunchtime) Rains getting heavier so I have to keep an eye on the flooding.

I have to keep moping or more stuff will get wet. It's the worst case of rising damp i have ever seen, it's coming up at about a gallon a minute through the cracks in the concrete.

Oh well, c'est la vie,
Cheers

[gmeast]

toroid

I went to Hydrogen Garage and downloaded an updated .pdf called "ToroidWinding.pdf" of all things. It's an updated version w/o the longitudinal winding and lots of warnings of the Toroid/Circuit dangers ... lighting and all:
http://02d1852.netsolhost.com/radian...oidWinding.pdf

[Farmhand]

Aha it just dawned on me that a ferrite choke won't work.

It seems to reflect the spike and not allow it to the battery. I think from memory somewhere back in this thread someone mentioned that a specific choke was required (must be iron powder for high frequency) but I can't find the reference to it yet.

Oh and the change I made to the choke drawing a few posts back was crazy "no good", in the video I tried it the original way, but the small toroid choke was ferrite.