Something new

woody · 25th May 2003, 02:43 AM

Over on the Pass Labs forum the subject of the Alpha-X and BOZEN-X has been realy hot. But they rely on n and p chanel
fets. With tubes could we use a triode in inverted mode as the
complement of a regular triode.......

Hay! I just thaught it was worth thinking about.

Regards,

Bob12345678

fdegrove · 25th May 2003, 03:53 PM

Hi,

Complementary tubes do not exist...although it would be great to have that kind of feature.

It would certainly make OTL amps much easier to design.

Alas,

dhaen · 25th May 2003, 08:57 PM

Hi,

That's as close as you'll get to a compliment. However, although the voltage amplified output signal comes out at a more negative voltage, it is in-phase with the input signal.

Is it useful?

Right, who's game?

Cheers,

fdegrove · 25th May 2003, 09:24 PM

Hi,

A compliment is not a complement....

Quote:

However, although the voltage amplified output signal comes out at a more negative voltage, it is in-phase with the input signal

Not really sure I follow you on this one...are you refering to the typical OTL outputstage?

Quote:

Right, who's game?

I am running already...

Cheers,

dhaen · 25th May 2003, 10:29 PM

Quote:

Originally posted by fdegrove
Hi,
snip..

Not really sure I follow you on this one...are you refering to the typical OTL outputstage?

snip..

Cheers,

No Frank, I believe we're talking about this:

From Steve Bench's site:

http://members.aol.com/sbench102/inverted.html

Cheers,

fdegrove · 25th May 2003, 10:32 PM

Hi,

The inverted triode mode does not make for a nice complement...

Steve Bench?

I doubt our threadstarter is even remotely aware of that mode of operation, John.

Cheers,

25th May 2003, 02:43 AM	#1
woody diyAudio Member Join Date: Jan 2002 Location: Tyrone Ga. U.S.A.	Something new Over on the Pass Labs forum the subject of the Alpha-X and BOZEN-X has been realy hot. But they rely on n and p chanel fets. With tubes could we use a triode in inverted mode as the complement of a regular triode....... Hay! I just thaught it was worth thinking about. Regards, Bob12345678

25th May 2003, 03:53 PM	#2
fdegrove diyAudio Senior Member Join Date: Aug 2002 Location: Belgium	UNFORTUNATELY... Hi, Complementary tubes do not exist...although it would be great to have that kind of feature. It would certainly make OTL amps much easier to design. Alas, __________________ Frank

25th May 2003, 10:32 PM	#6
fdegrove diyAudio Senior Member Join Date: Aug 2002 Location: Belgium	YOU MIGHT... Hi, The inverted triode mode does not make for a nice complement... Steve Bench? I doubt our threadstarter is even remotely aware of that mode of operation, John. Cheers, __________________ Frank

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25th May 2003, 08:57 PM	#3
dhaen diyAudio Moderator Emeritus Join Date: Jun 2002 Location: U.K.	Hi, That's as close as you'll get to a compliment. However, although the voltage amplified output signal comes out at a more negative voltage, it is in-phase with the input signal. Is it useful? Right, who's game? Cheers,