Diamond buffers

Nordic · 12th March 2007, 04:10 PM

Ok, stupid question time, what exactly is a diamond buffer.

It looks to me at first glance like a way of keeping the power rails balanced like a resistor divider except, it is on the output side?

I can find many pages with PCBs and diffirent diamond buffers, but none of them clearly tell me what the hell I should do with one if I built it, what are the limitations? If it does sit on the output side I would imagine power limits...

Please connect a few dots... I'm a quick study normaly, I promise...

Juergen Knoop · 12th March 2007, 05:14 PM

I´m curious too!
don´t know exactly what a diamond buffer is, but it maybe referencing to these pushpull-emitter followers,
where two emitter followers, one npn - one pnp, symmetrically drive a AB-pushpull output stage.
Regards

kristleifur · 12th March 2007, 05:28 PM

On page two of this PDF is a schematic of a diamond buffer:

http://tangentsoft.net/audio/ppa/amp...schematic8.pdf

They're pretty popular for headphone amplifiers. Check the head-fi.org and headwize.com forums for more info.

Nordic · 12th March 2007, 06:04 PM

Like I said, getting a circuit no problem, but what does it do?

Juergen Knoop · 12th March 2007, 06:58 PM

it is used to provide more output current to a given voltage source, i.e to "buffer" it.
Think of it as a more elaborate emitter follower.

kristleifur · 12th March 2007, 07:02 PM

And as I said:

Quote:

Check the head-fi.org and headwize.com forums for more info.

hifimaker · 13th March 2007, 02:58 AM

Do a google search for Jung Diamond buffer. You will find the source documents by Walter Jung.

-David

Juergen Knoop · 13th March 2007, 03:13 PM

ok, I did it...
But why this is called a diamond buffer?
My textbook refers these circuits as push-pull emitter followers widely used in integrated circuits.
Regards
Jürgen

12th March 2007, 04:10 PM	#1
Nordic diyAudio Member Join Date: Sep 2005	Diamond buffers Ok, stupid question time, what exactly is a diamond buffer. It looks to me at first glance like a way of keeping the power rails balanced like a resistor divider except, it is on the output side? I can find many pages with PCBs and diffirent diamond buffers, but none of them clearly tell me what the hell I should do with one if I built it, what are the limitations? If it does sit on the output side I would imagine power limits... Please connect a few dots... I'm a quick study normaly, I promise...

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12th March 2007, 05:14 PM	#2
Juergen Knoop diyAudio Member Join Date: Jan 2007 Blog Entries: 3	I´m curious too! don´t know exactly what a diamond buffer is, but it maybe referencing to these pushpull-emitter followers, where two emitter followers, one npn - one pnp, symmetrically drive a AB-pushpull output stage. Regards

12th March 2007, 05:28 PM	#3
kristleifur diyAudio Member Join Date: Apr 2006 Location: Reykjavík	On page two of this PDF is a schematic of a diamond buffer: http://tangentsoft.net/audio/ppa/amp...schematic8.pdf They're pretty popular for headphone amplifiers. Check the head-fi.org and headwize.com forums for more info.

12th March 2007, 06:04 PM	#4
Nordic diyAudio Member Join Date: Sep 2005	Like I said, getting a circuit no problem, but what does it do?

12th March 2007, 06:58 PM	#5
Juergen Knoop diyAudio Member Join Date: Jan 2007 Blog Entries: 3	it is used to provide more output current to a given voltage source, i.e to "buffer" it. Think of it as a more elaborate emitter follower.

13th March 2007, 02:58 AM	#7
hifimaker diyAudio Member Join Date: Oct 2003 Location: San Jose	Do a google search for Jung Diamond buffer. You will find the source documents by Walter Jung. -David

13th March 2007, 03:13 PM	#8
Juergen Knoop diyAudio Member Join Date: Jan 2007 Blog Entries: 3	ok, I did it... But why this is called a diamond buffer? My textbook refers these circuits as push-pull emitter followers widely used in integrated circuits. Regards Jürgen

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