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Old 18th September 2011, 09:17 PM   #11
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Would it be good to put capacitor accross bases of transistor drivers to lower distortion?
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Old 18th September 2011, 10:41 PM   #12
AKSA is offline AKSA  Australia
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Nice to see you here, Wim. I have long admired your work.

As it happens, I'm working on a hybrid too, and just like you, have long considered the 5965 as it has ideal mu and rp for the voltage stage.

The SS buffer is done; it does use nfb, but has loop gain of around 50dB, easily manipulated.

The ideas behind it are quite similar to yours!

Groetjes,

Hugh
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Old 19th September 2011, 08:46 AM   #13
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SS buffer with nfb is exactly what I am looking for. Would you mind sharing schematics or can you be please so helpful and point me to another schematic/idea?

Thank you.
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Old 19th September 2011, 10:53 AM   #14
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Default Nishiki with Aikido driver stage according to Wim

Enclosed the document I made regarding the Tubecad Aikido driver stage in combination (ECC83/82) with the Nishiki powerstage. This docement also mentiones the values for the 5965 tube.

Wim
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File Type: pdf nishikiaikido.pdf (149.8 KB, 271 views)
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Old 19th September 2011, 11:07 AM   #15
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Default Nishiki PCB circuitboard

And for those who have interest, I do have still some professional made PCB's of the Nishiki powerstage, see enclosed photo. I can offer the PCB for just 10 euros, for stereo you will need 2 boards.

Wim
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File Type: jpg circuitboard2b.jpg (84.7 KB, 350 views)
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Old 19th September 2011, 12:35 PM   #16
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Default Nishiki

Can I lower emitter resistor in output stage from 0.22 Ohm to 0.1 Ohm to have better damping factor without any stability problems?

Thanks.
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Old 25th November 2013, 03:52 AM   #17
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[QUOTE= But i still don't understand my question in my first post.
What is the diffrens between the two 5200? Can i used the cheaper one? [/QUOTE]

No matter the expensive or the cheap ones, price is not the judge, the real one is the answer.



we only tell the truth, nothing but the truth.
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Old 26th November 2013, 10:57 PM   #18
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TTC/A prefix parts are genuine Toshiba, manufactured in China at lower cost. This makes it difficult for fakes of these to be profitable but if you need confirmation, download datasheets. ???? | ?? ????????&??????
http://www.semicon.toshiba.co.jp/inf...TC5200&lang=en
Ironically, parts still marked 2SC/A will likely become suspect as fakes, as have 2SC3281/A1302.
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Last edited by Ian Finch; 26th November 2013 at 11:00 PM.
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