Use for the Tesla Switch

[ren]

Ya that will do. Its just "Incase" thing. Like I said the Hong fa's are very temperamental. They won't put up with much. You might run that thing 100 times then POW, no switch. I have used them alot.



Matt

Hmmm. Interesting. So have you found the Hongs to be unreliable, or have they popped because of user error, or changes to the system? I got these ones cause the local store had em, but they are $50 a pop. If we can achieve the same thing with a $5 mosfet then that is where I'll start researching. The local store only has 30v/100A ones, I wonder if the higher voltage ones you suggested would be more robust....

Cheers

[Matthew Jones]

[ATTACH]9261[/ATTACH]

That is really nice to see Dennis. I appreciate you sharing.
I am glad you are happy with your results as well. But I can tell ya now if you just watch this thing run a few times and start looking at the batteries as well as the potential on the AC output of the transformer you'll find that sweet spot for you load and 69% will become a thing of the past.
Keep looking. I am happy to know ya.

Matt

[Bit's-n-Bytes]

[ATTACH]9261[/ATTACH]

Dennis, this is great work. Nice recording of the test and documenting.


Thanks

Bit's

[Sobakin]

Hi Matt, thanks for your patience.

I gave you recipe. I told you what to look for. I told you the speeds. Other peoples are working. So far yours hasn't and now you want to give advice.
Based on past experience that behavior is very suspect to me. I am hoping you are not that way but I would really appreciate you more if had you tried first what I told you to use and not what you felt was better.

I did like You say in Your PDF (except low freqs because have not a low-freq transformer yet).
You say that it's not need to absolute copy your setup, but principles, so I've built it as I feel better (schematic in this post).

"Iron just wont run at these frequencies" Was along the lines of what you said.

I said this about high frequencies, 2000Hz+, at such frequencies efficient of standard iron core begins to lower. For low (50-100 Hz) frequencies I need more windings, otherwise high current thru windings will destroy transformer and / or transistors. Where am I wrong?

So I do not understand why now you want help and explanation. Isolate your problem and then I can help you.

Can You tell me what is my setup problems (except high frequencies)?
My setup:

pulse generetor signals is 12V.

[dnewkirk]

Dennis, this is great work. Nice recording of the test and documenting.
Thanks
Bit's

Thanks folks, Matt, Bit's for the nice comments. I'm already salivating about building the 'Big One', but that's only after simulating everything on the smaller ckt. I think it's a perfect test bed for trying out all the enhancements like adding extra 'kickback' diodes, ADC input for battery voltage, battery swapping switching, and anything else that can move this little wonder towards the self-sustaining dream realm. I'm getting together some garden tractor batts that are true flooded wet cells to compare with the performace of the AGM batts. I'll be searching hard for the sweet spot. When I get something exciting, I'll document it and post it. --Dennis

[Sobakin]

Thanks for report, great work!
Did You these tests to fully discharge batteries (to 11V, for example), and/or with bigger load?

[Sobakin]

Thanks for report, great work!
Did You these tests to fully discharge batteries (to 11V, for example), it may need to swap batteries after discharge one pair, and/or with bigger load?

[dnewkirk]

Did You these tests to fully discharge batteries (to 11V, for example), it may need to swap batteries after discharge one pair, and/or with bigger load?

Hey Sobakin,
No, I did not fully discharge the batteries. These were well used

[ehsanco1062]

[Matthew Jones]

@Ehsan

I am really happy for ya. I am happy all of you decided to pick it up and give it try.

I love seeing the results come in. I am really you guys all take an interest in trying to make it run better with what you have already built.

I am Sorry I do not have much time to just start throwing out clues and the thing you need to move on. But even If I told my exact formula it wouldn't be the same for ya. Its so much better to produce the results your looking and understand through experience.

Again I am just tickled by all this, Keep it up.

Matt

[Matthew Jones]

Hmmm. Interesting. So have you found the Hongs to be unreliable, or have they popped because of user error, or changes to the system? I got these ones cause the local store had em, but they are $50 a pop. If we can achieve the same thing with a $5 mosfet then that is where I'll start researching. The local store only has 30v/100A ones, I wonder if the higher voltage ones you suggested would be more robust....

Cheers

Sorry I missed this. I am not saying they are prone to failure. They are temperamental little things. Once you realize how to treat them then you can push them real good. The just need a little extra safety measure. And you do not want to go much over 1 khz with them.

But you can get results with them. I personally haven't used the 30 volt 100 amp version but I have used 200 volt 40 amp and the 50 volt 80 amp. Both real robust as long as they did not get any abuse. First time you make a little mistake POW. LOL

Don't be scared and second guess yourself just buy a fire extinguisher. LOL I am just kidding.

Matt

[Turion]

ehsanco 1062

Good to hear you finally got it running!. We were rooting for ya.

I ordered my #14 magnet wire today so I can get my large transformer wound. Can't believe that in the Silicon Valley there is no supplier of magnet wire and I had to order it off the internet. What is the world coming to!! Already have everything else, so looking forward to having the big one done, and will be ready for when we go to the next step.

I still have lots and lots and LOTS of things to do with the three setups I have built and have up and running. I am running two setups on 3.5 amp hour batteries, one setup on 7 amp hour batteries. I haven't been satisfied with any part of what I have done, and am looking for ways to make all of it easier and simpler. To that end, I am looking at building some circuit boards to replace the mess of wires I have. Always wanted to try that detail soldering and see if I was any good at it! LOL

David

[Sobakin]

Hi dnewkirk,
thanks for answer,
I got added evidence that frequency is most important.

[IndianaBoys]

I am looking at building some circuit boards to replace the mess of wires I have. Always wanted to try that detail soldering and see if I was any good at it! LOL

David

Turion,

This may make your life easier:

PCB "Fab-In-A-Box" ... The 8min circuit board system

IndianaBoys

[ehsanco1062]

ehsanco 1062

Good to hear you finally got it running!. We were rooting for ya.

David

Hi David
ya indeed you wer[QUOTE=Turion;162823]