Nishiki Amplifier with 2SC5200 - Page 2

kacernator · 18th September 2011, 09:17 PM

Would it be good to put capacitor accross bases of transistor drivers to lower distortion?

AKSA · 18th September 2011, 10:41 PM

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

kacernator · 19th September 2011, 08:46 AM

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.

wimdehaan · 19th September 2011, 10:53 AM

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

wimdehaan · 19th September 2011, 11:07 AM

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

kacernator · 19th September 2011, 12:35 PM

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.

18th September 2011, 10:41 PM	#12
AKSA diyAudio Member Join Date: Sep 2001 Location: Melbourne, Australia	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 __________________ Aspen Amplifiers P/L (Australia) www.aksaonline.com

19th September 2011, 12:35 PM	#16
kacernator diyAudio Member Join Date: Jan 2008	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.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Nishiki hybrid amp	Tyimo	Solid State	87	6th May 2013 01:23 AM
Genuine 2SC5200 ???	Graham Maynard	Solid State	109	30th November 2011 08:23 PM
2sc5200 and 2sa1943?	adobetoo	Solid State	3	27th March 2011 08:46 AM
2sc5200	sdman	Solid State	15	12th September 2010 05:59 AM
fake 2sc5200?	xeclipse	Solid State	3	25th June 2010 03:43 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

18th September 2011, 09:17 PM	#11
kacernator diyAudio Member Join Date: Jan 2008	Would it be good to put capacitor accross bases of transistor drivers to lower distortion?

19th September 2011, 08:46 AM	#13
kacernator diyAudio Member Join Date: Jan 2008	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.