'Biefeld-Brown effect' based full range drivers

[Indalhc]

While we are waiting for someone to come up with a really good design for the
Amplitude Inverter One other device that could be very useful in the prototyping
stage is the following; an optical audio link. There are a number of usable kits available.

[Indalhc]

With a PWM output the highest value FET I've found is rated 1.5 kV
(Maybe IGBTs also could be used - some have higher ratings, and
they are PWM compatible).

The two Apex op-amps would give almost the double of that. So they
should be easier to work with / give better dynamics. And again, to
make use of these we need an Amplitude Inverter.

By the way, 2 kV may seem little compared to the main >20 kV
of The Field. These 2 kV modulates the higher field so the effect is
>20 ±1 kV.

[bigwill]

What's an amplitude inverter?

[Indalhc]

Originally posted by bigwill
What's an amplitude inverter?

The amplitude inversion could also with ease be done all in software, with the
following result / description of an amplitude inverter's function: Loud parts are
attenuated, silent parts are amplified.

And, come to think of it, those Apex op-amps are rather expensive. I've been a
little slow to see the possibility of transformer coupling (one reason is that the
op-amps further on / sometime in the near future somehow appears to be much
'easier' to miniaturize, but maybe one could make really small and high quality
transformers also some day.)

Maybe even slower to see the possibility of connecting a PWM based amp like
the Charlize to a 'ESL ready' / high voltage rated transformer. Again, an amplitude
inversion is needed (please designers; make the PWM chips have a 'single ended'
PWM source output somewhere - for the tweaking plasma purist - life would be so
much easier), [that is] unless one likes listening to amplitude inverted waveforms.

With a good transformer coupling, we won't have the same restriction on the grid
operating voltage either.

Next: How to connect all of this (amp with the associated transformer) to the grid.

[Indalhc]

What's an amplitude inverter?

With analogy to photography, it makes an exact negative image / print of the waveform.

(about miniaturization, perhaps piezoelectric transformers? http://www.worldandi.com/newhome/pub...ril/nspub1.asp )

[bigwill]

Originally posted by Indalhc
What's an amplitude inverter?

With analogy to photography, it makes an exact negative image / print of the waveform.

(about miniaturization, perhaps piezoelectric transformers? http://www.worldandi.com/newhome/pub...ril/nspub1.asp )

I see. I've had some more ideas of my own for a no-moving parts speaker, although mine is on a bigger scale, not lots of little ones, two big ones for stereo:



This is basically an ESL but the "diaphragm" is made from air ions instead. It would be interesting to see if this would work, maybe one day I could try it... I have a feeling these panels might have a good bass response too, since say for example you drove one stator positive and the other negative, you would (I think) get a constant air flow like a fan in one direction, much like a fan subwoofer (unless the accelerated ions lose all their speed when they hit the stators and discharge, would this happen?). A displacement limited diaphragm would not be able to move so much air.

[Indalhc]

Fan subwoofers operate in class A, as most plasma transducers do.

Except yours d:

Why not?

I have no problem with stereo - as long as it is for prototyping

(I planned to start working with a DCX, even a DEQX, but after connecting
to this Holographic Sound Project, I found there to be no return

[Indalhc]

Here is a suggested transformer coupling of the grid.

(please discard my earlier description on how to make a hardware
amplitude inverter: "invert the wave, then bias everything to reside
below zero". This [first part] may look nice on the paper with a
symmetric sine wave, however it would not give the true inverse
'print' of the wave

This picture is meant to describe that when the amp gives a/any
load to the transformer / grid, the effect is more and less attenuation.
With no audio signal from the amp the transducer will give full power
(DC).

Therefore, to make normal reproduction of sound, the audio
program must be amplitude-inverted (this applies to transformer
coupling of the grid) (it helps to turn the drawing upside-down while
looking at the waveform's relation to the 'Air-Ground' to get the full
picture

[Indalhc]

Originally posted by bigwill



I see. I've had some more ideas of my own for a no-moving parts speaker, although mine is on a bigger scale, not lots of little ones, two big ones for stereo:



This is basically an ESL but the "diaphragm" is made from air ions instead. It would be interesting to see if this would work, maybe one day I could try it... I have a feeling these panels might have a good bass response too, since say for example you drove one stator positive and the other negative, you would (I think) get a constant air flow like a fan in one direction, much like a fan subwoofer (unless the accelerated ions lose all their speed when they hit the stators and discharge, would this happen?). A displacement limited diaphragm would not be able to move so much air.

On a second thought - a push-pull operating plasma transducer could be interesting.

And dark pictures are more mild to the eyes, I must incorporate this

[Nixie]

That design you quoted looks pretty much the same thing as what Pass did:
http://www.diyaudio.com/forums/attac...amp=1017889664

As for the previous diagram: why use transformer coupling? This is a perfect example of where direct drive by tubes is what's called for.