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Old 17th July 2010, 01:26 PM   #1
Stee is offline Stee  Italy
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Default the ultra Fet Buffer

Hello SolidState Man
in this project you can see all the best of my Science
this buffer with cascode have as load two SRPP
this circuit can works with estreme audio accuracy
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File Type: png +srpp Ultra jfet BUFFER.PNG (122.5 KB, 338 views)
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Old 17th July 2010, 05:21 PM   #2
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Quote:
Originally Posted by Stee View Post
this circuit can works with estreme audio accuracy
Here's a humorous definition of "accuracy" from the late J. Gordon Holt's Audio Glossary:

The ultimate objective of an ideal sound system, which everyone claims to want but nobody likes when he has it.



se
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Old 17th July 2010, 08:15 PM   #3
Stee is offline Stee  Italy
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Default image as a coherent Vinil

the target is have a Centre with Compact Disc like Vinil
the way is a complete compensation of each device
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Old 17th July 2010, 08:30 PM   #4
Zen Mod is offline Zen Mod  Serbia
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symmetric CCS feed , cascoded complementary jfet buffer , feeding MF A1

what's new there ?
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Old 17th July 2010, 08:35 PM   #5
CBS240 is offline CBS240  United States
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Why is there a current source on the collector of the cascode transistor? This would equate to two current sources in series because the collector is essentially a current source, all be it dependent on the input transistor current. Should not the CCS be from the base of the cascode transistor to the rail? And what's with that noisy Zener? I would loose that nasty thing.

Simpler yet would be to use larger goss J-fets as the cascode transistors (larger Vgs) and completely forget the voltage divider and current sources.

AKA Erno Borbely
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Last edited by CBS240; 17th July 2010 at 08:42 PM.
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Old 17th July 2010, 08:37 PM   #6
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I suspect it won't actually work, and is a theoretical idea never tested.

Why? The purpose of a buffer is to drive lower impedances than the basic previous signal circuit can drive - yes?

But above each cascoded fet source follower is an EXTREMELY tight CCS, so where can peak currents come from that will be needed into any lowish impedance load?

Stee?

Regards, Allen
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