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Solid State Talk all about solid state amplification.

Build me a ss direct drive ESL amp, please
Build me a ss direct drive ESL amp, please
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Old 8th November 2017, 09:44 PM   #41
Discopete is online now Discopete  Canada
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Build me a ss direct drive ESL amp, please
Quote:
Originally Posted by bentoronto View Post
Juma, post 5, laid out the liability issues for a person to make a black-box for you that could kill you, your dog, or your kids*, whether or not there are cables across your living room floor and/or whether or not they did it turn-key as a single integrated package with the speakers and/or you signed something that provided the false illusion of a legal release.

B.
*I assume you would turn the amp off once it killed your dog or kids and so no need to say "dogs and/or kids...."** Likewise, I assume your estate would likewise protect your dog after your death.

** I am further assuming your kids are not holding your dog at the time of their joint electrocution nor that the dog was holding your kids; please correct me of those are gratuitous assumptions.
I take it you read post #8. Excuse me but I'm not the dufus that designed this system that's been around since 1976. You can stick your hand in any amp and kill yourself. Many have died by surprise working on the old tube TVs of the past, far more dangerous. Cite one instance where someone was electrocuted by a DD servo Acoustat OTL? This is false alarm. You have not answered my question to you.

Last edited by Discopete; 8th November 2017 at 09:47 PM.
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Old 9th November 2017, 12:02 AM   #42
bentoronto is offline bentoronto  Canada
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Build me a ss direct drive ESL amp, please
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Originally Posted by jwilhelm View Post
How much current do these types of amplifiers need to produce? Everyone keeps cautioning about the voltage but is the current there to make it lethal?
Not a whole lot to drive the panels. But as far as I know, to do it feasibly, it has to be directly connected to the power supply.

B.
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Old 9th November 2017, 12:20 AM   #43
jwilhelm is offline jwilhelm  Canada
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From what I've been reading, the center plate connects to a constant supply and the outer plates are connected to push pull amplifiers. I'm curious how dangerous they actually are. Automitive ignitions run 10 times the voltage but isn't lethal.
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Old 9th November 2017, 08:46 PM   #44
kazap is offline kazap  Australia
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It looks like a successful Direct Drive SS amp was built in Europe by Peter Scheulderman.

Elektrostaten Project 06

It would be useful to have the build details/measurements/schematic. Anyone?
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Old 10th November 2017, 10:15 AM   #45
gentlevoice is offline gentlevoice  Denmark
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Build me a ss direct drive ESL amp, please
@kazap:

I found this in another diyaudio thread:

Quote:
On the high, well I was hoping an ESL without step-up transformer could do the trick mid and high ( Elektrostaten Project 06 ), unfortunately Peter Scheulderman is passed away and I cannot find anything about his amp. So that basically rules out a one piece ESL for mid/high.
The link is:

Full range planar speaker using neo magnets

But maybe contacting esl-club could bring about a schematic?

Cheers,

Jesper
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Old 10th November 2017, 10:19 AM   #46
gentlevoice is offline gentlevoice  Denmark
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Build me a ss direct drive ESL amp, please
Hi all,

This thread looks really interesting ... a thought related to direct drive: Any of you have considered a direct drive DSD ESL amplifier. Would potentially make the signal path very short ...

Cheers,

Jesper
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Old 10th November 2017, 06:36 PM   #47
padamiecki is offline padamiecki  Poland
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Hi,
continued...
http://tubecad.com/2017/11/06/Circlo...eakers%201.png
More Electrostatic Ideas
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Old 10th November 2017, 07:53 PM   #48
Discopete is online now Discopete  Canada
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Build me a ss direct drive ESL amp, please
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Looks like a done deal?
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Old 10th November 2017, 08:41 PM   #49
Nelson Pass is offline Nelson Pass  United States
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Build me a ss direct drive ESL amp, please
Broskie's second offering points out the crucial thing - you want to make
SS do audio at these voltages, you must cascode the devices.

Been there, and it's the only way.

There is an alternative approach, which is to take feedback around the transformer
secondary, which is what I did with the 10 KV Dayton Wrights 40 years ago...
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Old 10th November 2017, 09:21 PM   #50
Discopete is online now Discopete  Canada
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Build me a ss direct drive ESL amp, please
And yet you decided to fight the establishment..yours
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