Author Topic: Resonance WFC measurements  (Read 36836 times)

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Re: Resonance WFC measurements
« Reply #32 on: June 01, 2011, 11:46:52 am »
Tell me your findings / opinion...

Look at the pulse/gate waveform in the attachment.

Step-charging effect increases in a "LINEAR" fashion.

We can see that the pulse waveform never reach zero level. Stan said it sustains resonance.
So this can be the answer to keep the flux above zero in the core.

Most of us use MOSFETS why did Stan use TRANSISTORS?

Is there an bias in the circuit schematic?

Br,
Webmug

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Re: Resonance WFC measurements
« Reply #33 on: June 01, 2011, 13:22:20 pm »
Hmm, I thought stan's driver was just old school. we need to just build it and find out

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Re: Resonance WFC measurements
« Reply #34 on: June 01, 2011, 21:30:14 pm »
From the patent (1992-US005149207A):

"...(B) subjecting the capacitor to a pulsating, unipolar electric voltage field in which the polarity does not pass beyond an arbitrary ground..."

"...increase in cascading incremental steps in proportion to the number of pulses; (E) maintaining the charge..."

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Re: Resonance WFC measurements
« Reply #35 on: June 02, 2011, 09:02:01 am »
Tell me your findings / opinion...

Look at the pulse/gate waveform in the attachment.

Step-charging effect increases in a "LINEAR" fashion.

We can see that the pulse waveform never reach zero level. Stan said it sustains resonance.
So this can be the answer to keep the flux above zero in the core.

Most of us use MOSFETS why did Stan use TRANSISTORS?

Is there an bias in the circuit schematic?

Br,
Webmug


You also should transistors instead of fets.
Use the 3055, for example.
Fets have some components build in , like diodes etc.
I have seen bouncing signals on my scope, which looked like resonance.
However, it was the fet that was demping my signal, and did that in a bouncing manner.
When i used transistors, the effect was gone.
Then i saw the real signal of the bemf. Just one nice negative spike.
Just try, i would say. Observe.


Steve

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Re: Resonance WFC measurements
« Reply #36 on: June 14, 2011, 14:53:40 pm »
Well as I can tell, this Cell Driver Circuit is a Class A Amplifier!
Stan has the TIP120 on a very large cooling backplate (the VIC box) so this tells me that the TIP120 is always in the ON state.

The signal has a BIAS (resistor divider) at the base, so the signal never goes zero when pulsing/gating so there is always current flowing.
The good part is that a TIP120 is a Darlington so current is gained and heat is reduced.
This configuration named:  Transformer Coupled Amplifier is the basis of the Primary driver.

Br,
Webmug

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Re: Resonance WFC measurements
« Reply #37 on: June 14, 2011, 15:07:25 pm »
That's very interesting! do you think this will keep the wave from going below zero on the scope?

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Re: Resonance WFC measurements
« Reply #38 on: June 14, 2011, 15:13:30 pm »
That's very interesting! do you think this will keep the wave from going below zero on the scope?
Yes!
When a AC swing (input signal) goes into the base there is an offset to the output voltage. So you can make the offset that the AC swing will never go below zero voltage. When this happens the transistor will be clipping the negative part.

When a DC pulse is given to the base there will be higher voltage at the output (because of missing negative part).
So offset could be lowered.

Br,
Webmug

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Re: Resonance WFC measurements
« Reply #39 on: June 14, 2011, 18:42:07 pm »
Webmug,


sooooooooooooooo..........  if i take my 8xa coil, diode, gating pwm and tube setup and switch out the negative side mosfet and diode with a positive side TIP120 and diode as you describe then my negative and positive swinging pulse filled sine waves will now be only positive on the oscope?   this I gotta see
I'm ready to give it a try...  please advise


kb