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Old 11th December 2005, 02:30 PM   #11
Calvin is offline Calvin  Germany
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Hi,

what Ive listened to is without any relevance for the prob.
ESLs work by voltage not by current. It would be practically impossible to build a constant current amp for the whole audio band.

Calvin
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Old 12th December 2005, 10:50 PM   #12
Bazukaz is offline Bazukaz  Lithuania
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Hi,
I have an idea to take regular driver IC and use it to drive high voltage transistors.
It is possible , and would this schematic work ?

Lukas
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Old 13th December 2005, 04:13 AM   #13
el`Ol is offline el`Ol  Germany
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Here is a discussion about Class D with thyratrons.
tubes in class d?
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Old 13th December 2005, 08:25 AM   #14
Calvin is offline Calvin  Germany
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Hi,

@Bazukaz

It wont work with this schematic, because the output Trannies work as Buffers with an voltage amplification of ~1. Therefore the driver circuit (the IC) has to supply all the needed voltage which it doesnt.
The thing could work with added circuitry, that steps up the low output voltage of the IC to the desired high level. But adding steps means adding probs with phaseshift and stability and..and....and........

jauu
Calvin
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Old 13th December 2005, 04:03 PM   #15
hilbren is offline hilbren  Netherlands
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http://www.headwize.com/projects/sho...ilmore_prj.htm

http://www.ultranalog.com/
- http://ultranalog.com/9912/9912.html
- http://ultranalog.com/9912/phylira2.html
- http://ultranalog.com/9912/p25/
- http://ultranalog.com/coldwar/
(only problem with this schematics is; i don't see ANY feetback??)

can anyone give me a gues of the price of one of those schematics?
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Old 14th December 2005, 09:04 PM   #16
Bazukaz is offline Bazukaz  Lithuania
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I think that direct drive amps are generally better then output trannies.
Transformer gives much more distortion than amplifier itself.

ESL's are very efficient.Almost all power is dissipated in amplifier.
So , a new type of amplifier that could use this feature of ESL is required .

I don't even imagine how such an amplifier should look like ...
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