Germanium transistors work fine in output stages ?

aldovan · 30th July 2007, 02:34 PM

Friends

Anyone get good results using a Germanium transistor in a output stage ?

Aldovan

runebivrin · 30th July 2007, 03:41 PM

Yep, not too shabby for a 60's design. It's about as useful as two tin cups with a piece of string between them.

ilimzn · 30th July 2007, 04:10 PM

Why not give us a few good reasons to try them, given all the silicon abundance available? It would be a nice way to start a constructive discussion...

astouffer · 30th July 2007, 04:11 PM

Its been discussed before:

http://groups.google.com/group/rec.a...028529742a99fc

aldovan · 30th July 2007, 04:31 PM

Ok, have a lot of silicon transistors today and the sound quality remains very inferior to old tubes .
Germanium transistors do not can be a new option for superior quality ?
In my tests with Mosfets, this device have a superior THD when compared with bipolars...
The modern industry have others options? For me, NO !!!
The best option is the return to past !!!

destroyer X · 30th July 2007, 04:54 PM

Now we have a good reason to start a discussion.

Big field town was also great!

regards,

Carlos

Conrad Hoffman · 30th July 2007, 05:00 PM

Germanium devices of old were leaky, highly temperature sensitive, and hard to stabilize. Reliability wasn't as good as today's devices either. IMHO, the perfect device for hi-end audio! Seriously, they do have one advantage. They turn on at or near zero volts. That's why germanium diodes are still used for some small signal RF applications- you can still buy a 1N270. If you could keep the thermal problems under control, there might be the possibility of lower inherent crossover distortion. I didn't read the old stuff, so sorry if this has already been mentioned.

aldovan · 30th July 2007, 05:01 PM

Obrigadooo,

Thanks, the Brazil is really beautifull...

Aldovan

aldovan · 30th July 2007, 05:10 PM

Temperature do not is a problem, I can use liquid oxygen or a refrigerator chip in the Germanium device...
Seriously, a good termal project help for avoid problems.
In others words, Mosfets have a higher distortion wheen compared to bipolar and is the most used output transistor today...

Aldovan

Eva · 30th July 2007, 05:35 PM

After so many years trying to achieve better and better linearity and reliability in audio electronics, we have to face the sad truth about the human being:

1 - We love distortion and metaphysics

2 - Amplifier people doesn't want to learn about loudspeakers and acoustics

30th July 2007, 02:34 PM	#1
aldovan diyAudio Member Join Date: Jul 2005 Location: Campo Grande city	Germanium transistors work fine in output stages ? Friends Anyone get good results using a Germanium transistor in a output stage ? Aldovan

30th July 2007, 03:41 PM	#2
runebivrin diyAudio Member Join Date: Jul 2003 Location: Huddinge, Sweden	Yep, not too shabby for a 60's design. It's about as useful as two tin cups with a piece of string between them. __________________ Do wizards use spell checkers?

30th July 2007, 04:31 PM	#5
aldovan diyAudio Member Join Date: Jul 2005 Location: Campo Grande city	And why not Germanium ? Ok, have a lot of silicon transistors today and the sound quality remains very inferior to old tubes . Germanium transistors do not can be a new option for superior quality ? In my tests with Mosfets, this device have a superior THD when compared with bipolars... The modern industry have others options? For me, NO !!! The best option is the return to past !!!

30th July 2007, 04:54 PM	#6
destroyer X diyAudio Member Join Date: Feb 2004 Location: Recife - Brasil Northeast	Putz!... essa foi profunda.... that one was great Now we have a good reason to start a discussion. Big field town was also great! regards, Carlos __________________ Try to build an amplifier folks ... it is pure adrenaline!

30th July 2007, 05:01 PM	#8
aldovan diyAudio Member Join Date: Jul 2005 Location: Campo Grande city	Germanium is a good reason... Obrigadooo, Thanks, the Brazil is really beautifull... Aldovan


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

30th July 2007, 04:10 PM	#3
ilimzn diyAudio Member Join Date: Feb 2005 Location: Zagreb	Why not give us a few good reasons to try them, given all the silicon abundance available? It would be a nice way to start a constructive discussion...

30th July 2007, 04:11 PM	#4
astouffer diyAudio Member Join Date: Jun 2004 Location: Pittsburgh, crumbling wasteland	Its been discussed before: http://groups.google.com/group/rec.a...028529742a99fc

30th July 2007, 05:00 PM	#7
Conrad Hoffman diyAudio Member Join Date: Mar 2007 Location: Canandaigua, NY USA	Germanium devices of old were leaky, highly temperature sensitive, and hard to stabilize. Reliability wasn't as good as today's devices either. IMHO, the perfect device for hi-end audio! Seriously, they do have one advantage. They turn on at or near zero volts. That's why germanium diodes are still used for some small signal RF applications- you can still buy a 1N270. If you could keep the thermal problems under control, there might be the possibility of lower inherent crossover distortion. I didn't read the old stuff, so sorry if this has already been mentioned.

30th July 2007, 05:10 PM	#9
aldovan diyAudio Member Join Date: Jul 2005 Location: Campo Grande city	Temperature do not is a problem Temperature do not is a problem, I can use liquid oxygen or a refrigerator chip in the Germanium device... Seriously, a good termal project help for avoid problems. In others words, Mosfets have a higher distortion wheen compared to bipolar and is the most used output transistor today... Aldovan

30th July 2007, 05:35 PM	#10
Eva diyAudio Member Join Date: Oct 2003 Location: Near the sea	After so many years trying to achieve better and better linearity and reliability in audio electronics, we have to face the sad truth about the human being: 1 - We love distortion and metaphysics 2 - Amplifier people doesn't want to learn about loudspeakers and acoustics __________________ I use to feel like the small child in The Emperor's New Clothes tale

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