Looking for discrete buffer circuits capable of several watts or so...

Lingwendil · 17th April 2008, 07:45 AM

Hi everybody, I'm Anthony, and this is my first post here. I have done a lot of work with Szekeres style amps, and fiddled with op-amps somewhat, but after starting on my YAHA amps, I have been looking for solid state alternatives to op-amp based buffers for output stages. Szekeres is great, but I'm starting to get interested in complimentary pair DDB topologies. The ddb by Walt Jung looks cool, although I've read somewhere that there've been output mosfets swapped in. Does anyone have the schematics for those? Any help would be greatly appreciated.

lumanauw · 17th April 2008, 08:01 AM

I saw this from LME49600 datasheet. 2000V/us, 180Mhz, 250mA output device.

AndrewT · 17th April 2008, 09:15 AM

Hi,
Just found 455 replies to search on discrete buffer.
Try reading some of them.

jacco vermeulen · 17th April 2008, 09:32 AM

ddb= double diamond buffer

Lingwendil · 17th April 2008, 03:52 PM

Quote:

Originally posted by jacco vermeulen
ddb= double diamond buffer

Oh, everywhere else I've been it means Discrete diamond buffer.

Since mosfets are biased differently than bjt's, how would one change the circuit in order to use them?

17th April 2008, 07:45 AM	#1
Lingwendil diyAudio Member Join Date: Apr 2008	Looking for discrete buffer circuits capable of several watts or so... Hi everybody, I'm Anthony, and this is my first post here. I have done a lot of work with Szekeres style amps, and fiddled with op-amps somewhat, but after starting on my YAHA amps, I have been looking for solid state alternatives to op-amp based buffers for output stages. Szekeres is great, but I'm starting to get interested in complimentary pair DDB topologies. The ddb by Walt Jung looks cool, although I've read somewhere that there've been output mosfets swapped in. Does anyone have the schematics for those? Any help would be greatly appreciated.

17th April 2008, 09:15 AM	#3
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, Just found 455 replies to search on discrete buffer. Try reading some of them. __________________ regards Andrew T.

17th April 2008, 09:32 AM	#4
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, just under Rotterdam	ddb= double diamond buffer __________________ Looks like Sponge Bob has killed another thread.

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