output buffer for GC question

jsteigs · 23rd March 2005, 12:02 PM

Is there a way to buffer the output of a gainclone like with a transistor or a MOSFET? if so, how would you bias it? or is the signal already to large to be sent into another amplifier?

peranders · 23rd March 2005, 12:10 PM

Can you describe more what your goal is? Do you really want to feed an another amp with a 10-20 VAC signal as an input signal?

GregGC · 23rd March 2005, 01:37 PM

Quote:

Originally posted by jsteigs
Is there a way to buffer the output of a gainclone like with a transistor or a MOSFET? if so, how would you bias it? or is the signal already to large to be sent into another amplifier?

Use a resistor divider if the signal is too big. That's all you need according to the little info we have.

Greg

shusha · 23rd March 2005, 02:17 PM

Yeah, right. Let's amplify the signal at the reasonable level, then drop the voltage across resistor, disipate enough heat around and then again amplify through mosfet.

I think jsteigs give himself an answer in his last sentence.

I assume that hidden attention is to make PA system from Gainclone amp.

jsteigs · 24th March 2005, 08:16 AM

all i'm trying to do is amplify the signal a little more after the GC amp but i guess from all of your replys, it cant be done without wasting power.

Franz G · 24th March 2005, 11:06 AM

Maybe, this application note is interesting for you:

AN 272

Regards
Franz

BTW: I love the "Undestructible, Floating Output Booster on page 6/7: a tube amp

23rd March 2005, 12:02 PM	#1
jsteigs diyAudio Member Join Date: Oct 2004	output buffer for GC question Is there a way to buffer the output of a gainclone like with a transistor or a MOSFET? if so, how would you bias it? or is the signal already to large to be sent into another amplifier?

23rd March 2005, 12:10 PM	#2
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Can you describe more what your goal is? Do you really want to feed an another amp with a 10-20 VAC signal as an input signal? __________________ /Per-Anders (my first name) or P-A as my friends call me

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23rd March 2005, 02:17 PM	#4
shusha diyAudio Member Join Date: Sep 2004 Location: Velika Gorica	Yeah, right. Let's amplify the signal at the reasonable level, then drop the voltage across resistor, disipate enough heat around and then again amplify through mosfet. I think jsteigs give himself an answer in his last sentence. I assume that hidden attention is to make PA system from Gainclone amp.

24th March 2005, 08:16 AM	#5
jsteigs diyAudio Member Join Date: Oct 2004	all i'm trying to do is amplify the signal a little more after the GC amp but i guess from all of your replys, it cant be done without wasting power.

24th March 2005, 11:06 AM	#6
Franz G diyAudio Member Join Date: Jun 2004 Location: Bern / Switzerland	Maybe, this application note is interesting for you: AN 272 Regards Franz BTW: I love the "Undestructible, Floating Output Booster on page 6/7: a tube amp

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