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Old 28th January 2004, 01:53 AM   #1
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Default Borbely Fet Follower / HarryHaller?

Over a year ago, Harry Haller posted a shot of his Borbely fet follower:
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Old 28th January 2004, 01:55 AM   #2
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Is this the circuit? Taken from Borbely's JFET part 2 article. I'm interested in building one. HH seems to have a few more extra parts, looks like some power supply bypassing (large caps), but it also seems like he has it cap coupled?
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Old 28th January 2004, 09:02 AM   #3
Electrons are yellow and more is better!
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Default Re: Borbely Fet Follower / HarryHaller?

Quote:
Originally posted by transducer
Over a year ago, Harry Haller posted a shot of his Borbely fet follower:
Why don't you ask Mr. Fred Dieckmann? Harry is Fred!
http://www.diyaudio.com/forums/membe...fo&userid=3734
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Old 28th January 2004, 10:16 AM   #4
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Nice devices, but pig's work !
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Old 28th January 2004, 10:23 AM   #5
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Quote:
Originally posted by Upupa Epops
Nice devices, but pig's work !

3, 2, 1, .... Fight!
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Old 28th January 2004, 10:28 AM   #6
Electrons are yellow and more is better!
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Quote:
Originally posted by Upupa Epops
Nice devices, but pig's work !
I'll guess Fred has "Taxi driver" loaded in his VCR and stands in front of a mirror: You talking to me? You talking to me? You talking to _me_?

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Old 28th January 2004, 11:03 AM   #7
AKSA is offline AKSA  Australia
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You should see my breadboards - no, better not.

I don't even use a veroboard, just wire it 3D. Real mess, but ya gotta start somewhere.......

Is Harry REALLY Fred?

Fred is one of the finest engineers on this forum; I should know, I commissioned him to do an I/V and a Sallen Key filter and his work was exemplary. I can't speak highly enough for his mix of theory and practice.

Cheers,

Hugh
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Old 28th January 2004, 11:23 AM   #8
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Talking [Joke]

Quote:
Originally posted by peranders

I'll guess Fred has "Taxi driver" loaded in his VCR and stands in front of a mirror: You talking to me? You talking to me? You talking to _me_?

End of round 1 !

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Old 28th January 2004, 11:27 AM   #9
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Default IV schematic

Quote:
Originally posted by AKSA
You should see my breadboards - no, better not.

I don't even use a veroboard, just wire it 3D. Real mess, but ya gotta start somewhere.......

Is Harry REALLY Fred?

Fred is one of the finest engineers on this forum; I should know, I commissioned him to do an I/V and a Sallen Key filter and his work was exemplary. I can't speak highly enough for his mix of theory and practice.

Cheers,

Hugh
Hello Hugh,
Yes Harry = Fred, since a loooong time ago.
I would love to see a schematic of this IV by Fred. Is it silmilar to Jocko's ?
I also wire 3D just as Jim Williams of Linear Technology experimenting, but my PCB's are neat and tidy.
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Old 28th January 2004, 11:53 AM   #10
Electrons are yellow and more is better!
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I do also ugly 3D prototyping sometimes. Nothing wrong with that and you don't have to be a pig for that.
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