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Author Topic: Tesla Switch need help  (Read 163432 times)

Groundloop

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Re: Tesla Switch need help
« Reply #30 on: December 24, 2007, 12:58:58 PM »
[EDIT] Deleted.
« Last Edit: January 09, 2008, 11:00:50 PM by Groundloop »

sanmankl

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Re: Tesla Switch need help
« Reply #31 on: December 24, 2007, 01:40:19 PM »
@Sanmankl,

I have not done the firmware for the PIC quite yet. But I will in a couple of days. I'm currently soldering together a high speed 6 transistor switch with optocouplers. I have released my drawing on page 1 on this thread! I'm building my switch as shown in that drawing. I have six wires to solder on my switch and then can run a test to see if the switch is working ok. After this test I will start to write the assembler firmware for the PIC. Then I have to solder the capacitor and diode part of the circuit. (Waiting for parts so this will be one of week from now.)

[EDIT] Yes, I will release all information in this forum including the PIC16F84A firmware.

@Plengo,

Bedini did build a solid state circuit back in 1984. He states (in papers and also later on his web site) that this circuit works. I believe him. I have done a careful analyze of the papers and material available to me. My conclusion is that the transformers shown in the Bedini drawing is for controlling the base of the transistors and not for energy generating. Using a transformer like this was a common technique before optocouplers became available on the market. The transformer will insulate the transistor from the controlling circuit just as optocouplers do. So, yes, I do think a solid state version will work providing the switch it self is fast enough. The transistors I have selected is good for up to 30 MHz and that should be enough. If we use smaller batteries (say 9 V NiMh) then the 10 Amp. rating of the circuit will do fine as long as we use heat sink on the transistors.

Groundloop.

@ Groundloop,

My good man. Thanks for sharing. I'm "crippled" in terms of electronics and programming (writing code) so your contribution is much valued. That said, I may want to mod the circuit to use a timer chip like a 555 or something similar (TL594, perhaps?).

I look forward to your firmware release.

Holiday cheers, sanmankl

Groundloop

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Re: Tesla Switch need help
« Reply #32 on: December 24, 2007, 01:54:24 PM »
[EDIT] Deleted.
« Last Edit: January 09, 2008, 11:01:22 PM by Groundloop »

plengo

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Re: Tesla Switch need help
« Reply #33 on: December 24, 2007, 03:39:17 PM »
@Groundloop
thank you. Nice code too! Easy to read and very straighfoward.

Fausto.

Groundloop

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Re: Tesla Switch need help
« Reply #34 on: December 24, 2007, 04:05:20 PM »
[EDIT] Deleted.
« Last Edit: January 09, 2008, 11:02:02 PM by Groundloop »

Groundloop

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Re: Tesla Switch need help
« Reply #35 on: December 24, 2007, 08:27:59 PM »
[EDIT] Deleted.
« Last Edit: January 09, 2008, 11:02:39 PM by Groundloop »

plengo

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Re: Tesla Switch need help
« Reply #36 on: December 24, 2007, 10:11:32 PM »
@Groundloop,
Man, dont you rest? I am so excited about your work on this Brand device. I took my picKit1 out of the closet. Installed all the IDE's, HITECH compilers, tested my board and is running good. Next I will setup my laptop (where my bench is).

I look at the code and I am assuming you will control ALL the timing inside the program no messing with eletronics, correct? ( I programmed assembler 20years ago, what a refreshment).

And concerning the cap fix, is it the C12 on the control circuit?

I only have the pickit1 and pickit 2 debugger. Any advices on what is the best to buy for the pic development and what you are using (software, versions, programmer), just let me know I am buying today!!!

Fausto.

Groundloop

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Re: Tesla Switch need help
« Reply #37 on: December 25, 2007, 12:06:09 AM »
[EDIT] Deleted.
« Last Edit: January 09, 2008, 11:03:16 PM by Groundloop »

Groundloop

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Re: Tesla Switch need help
« Reply #38 on: December 25, 2007, 12:37:14 AM »
[EDIT] Deleted.
« Last Edit: January 09, 2008, 11:03:51 PM by Groundloop »

plengo

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Re: Tesla Switch need help
« Reply #39 on: December 25, 2007, 01:00:06 AM »
@Groundloop,

thanks. I am using the same that you are for the IDE. Now If I program and want to download to the Pic can I still use the picKit1?  I would assume since I can create programs today with the pickit1 and download to the inboard (but removable) pic I will be able to download any program.

Man, I can barely wait to purchase the parts and try it out.

Fausto.

Groundloop

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Re: Tesla Switch need help
« Reply #40 on: December 25, 2007, 01:44:57 AM »
[EDIT] Deleted.
« Last Edit: January 09, 2008, 11:04:28 PM by Groundloop »

Thaelin

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Re: Tesla Switch need help
« Reply #41 on: December 25, 2007, 02:03:32 PM »
Hey Guys:
   I did play around with this type of circuit a bit. I used only the 3 batt style and manually switched it using a car stop lamp for the load. I did run the batts down after a while. The light would draw around .9 amps.
   The point I wanted to make is to caution you all on the frequency of this switch. If I remember right, the switching time was 100 to 300 hz and any more than that was dangerous. Have no idea why on that but just bringing it up.
   Just make sure your switch on to switch off has a small lag in it so as not to cause a direct short. Even for just an instant would waste energy from the batts and possible excessive heating on the transistors.

   Groundloop, I like the design you did so much I will have to set it up. I have a sack full of darlingtons and so guess they need a home.   :D

Think I will just use 555's and use one to trigger the other with variable duty to make sure no overlap happens. Cheers.

thaelin

Groundloop

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Re: Tesla Switch need help
« Reply #42 on: December 25, 2007, 02:50:10 PM »
[EDIT] Deleted.
« Last Edit: January 09, 2008, 11:05:07 PM by Groundloop »

Super

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Re: Tesla Switch need help
« Reply #43 on: December 25, 2007, 03:37:03 PM »
@Super,

Sometimes I wonder if people really read the texts and circuit drawings.  ;D

The optocoupler I will use is the H11D1. If you look at the data sheet for that IC you will see that it can switch on or off in 5uSec. (Thats 5 micro second.) My transistor can handle up to 30 MHz. This is much faster than that. So the limiting switch speed for this circuit is 5 uSec. I think this is fast enough.

Yes a RS232 or USB tuning whould be nice. I have done a lot of them before. But in this project I think I keep it as simple as possible. You can probably use a 555 timer also.

I have done all the Bedini stuff so I do not need to research more on that.

Groundloop.


Hey Groundloop, you are right, reading before writing is always the better way  :)
sorry for that ...

Quote
I have done all the Bedini stuff so I do not need to research more on that.

Great to hear that, i'm 100% sure that you will get the same results as Bill Nelson and Ron Cole got.

Enough from me, will be quite and see what happens  :D

best luck, Super


Groundloop

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Re: Tesla Switch need help
« Reply #44 on: December 25, 2007, 03:53:09 PM »
[EDIT] Deleted.
« Last Edit: January 09, 2008, 11:05:40 PM by Groundloop »