user TURBO?s replication of Steven Mark?s TPU ?

[SPP-48]

Does anyone have a triple function generator circuit using the TL494 chip. That's the only one available in my part of the world.

Thanks

[pese]

take 3 of them !

555 are only low costl!

P.

[virus]

@Stefan Hartmann

Can you please ask Alex re: post #437, if he can maybe post his PCB foil pattern and a component list, if it is ok with him.

Has he built and tested the circuit ? ? ? ? ?

This unit I think we can start of with. Whilst others are still thinking on designs.

Listen guys, it might take 1 person 4 hours or even 20 hours or more, to design a decent frequency controller (probably with feedback and logging capabilities) to experiment with on the coils. Ever though if ?200 guys built their coils and try to experiment with a low-end  frequency controllers that is just not efficient enough. And these ? 200 guys spend ?20 hours on their coils before they give up it is a total of ? 4000 hours waited, opposed to time taken to design something decent by the guys that know how.

Yes, get to best possible frequency controller going/designed (please make it user-friendly), and limit even this variable to a lesser degree. It will just help making it better, achieving the end result quicker.

Yes, heck, I think a lot of us is for it ! ! ! !

VIRUS

[virus]

@ the experienced guys, your advice please.

FOR EXAMPLE:   for the guys that donââ,¬â,,¢t have a scope.

Using 3 of these frequency generators http://www.electronics-lab.com/projects/test/009/index.html, connecting a frequency counter on the out put on each, and then into the coil(s), . . .  (see attached zip), and pulse the coils

How would one detect when you hit the jackpot on the output coil, low voltage light bulb (will probably blow,  . . .good have a box full), neon light, strobe light, an arc between two nails, maybe 1 of each of the options,  ? ? ? ? ? ?

One can then just note down the frequencies used from the frequency counters, and post.

Come on guys help us newbieââ,¬â,,¢s here.

Virus

[Groundloop]

[EDIT] Deleted.