I dunno about you guys but I had a hell of a time removing noise EMI in my CSX1 that I ended up building separate chassis for the power supply. Perhaps the Nuvotec made, potted toroidals gave off some weirdly EMI, the noise was easily measured between covers on or off: Post #5 below:
https://www.diyaudio.com/community/threads/my-sony-vfet-csx1-adventures-grief.359938/post-6335454
Todays plan is that I'll be fitting Cinemag autoformers, using SMT caps on the back of the bords and a GOSS banded traffo mounted as far away as possible from the boards.
What I'd really love would be a Vishay pltu SMT version with the upper (and maybe also lower) layer of the board as a ground plane, earthed via the mtg posts. All the resistors and caps on the back
Might there be any possible benefit in mtg the transistors on the back with their heads pressed against the heatsink - also with a dab of thermal grease?
What I'd really love would be a Vishay pltu SMT version with the upper (and maybe also lower) layer of the board as a ground plane, earthed via the mtg posts. All the resistors and caps on the back
Might there be any possible benefit in mtg the transistors on the back with their heads pressed against the heatsink - also with a dab of thermal grease?
when OCD is in question, Sky is the limit
so, just set eyes on your own Sky, I already have mine
so, just set eyes on your own Sky, I already have mine
Very good answer 🙂when OCD is in question, Sky is the limit
so, just set eyes on your own Sky, I already have mine
Boards and parts have arrived 🙂
I wonder if anyone would have the time to mark the signal path on the circuit diagram? I'm a little confused by it. M2 was much more obvious.
Huge thanks to ZM
I wonder if anyone would have the time to mark the signal path on the circuit diagram? I'm a little confused by it. M2 was much more obvious.
Huge thanks to ZM
same as M2
small IRF mosfet is buffer/DC level shifter - leading signal to gate of LU
in context of signal, ignore cascode above LU
so, practically same as M2
small IRF mosfet is buffer/DC level shifter - leading signal to gate of LU
in context of signal, ignore cascode above LU
so, practically same as M2
That's fantastic 🙂
It's hard for me to understand how there is nothing feeding back via the 2nd set of front end JFETS and R112. Very clean signal path
It's hard for me to understand how there is nothing feeding back via the 2nd set of front end JFETS and R112. Very clean signal path
amp is extraordinary simple, you just need to recognize function blocks
maybe this could help. at least regarding OS arrangement ( biasing); practically first page of thread: https://www.diyaudio.com/community/threads/sissysit-r-3.371272/
useful - whenever I feel inadequate for grasping some logic, there is : https://www.imdb.com/title/tt1234548/?ref_=nv_sr_srsg_6
maybe this could help. at least regarding OS arrangement ( biasing); practically first page of thread: https://www.diyaudio.com/community/threads/sissysit-r-3.371272/
useful - whenever I feel inadequate for grasping some logic, there is : https://www.imdb.com/title/tt1234548/?ref_=nv_sr_srsg_6
I'm now wondering if there is some way to remove C103/104? Perhaps by tweaking the Autoformer somehow.
Maybe that's another stupid question
Maybe that's another stupid question
question is not stupid ...... only rationale behind it can be
that's practically sole ( serious) cap in signal path .... but it's sonic footprint ( if made as I made it - Silmic+MKC bypass) is much lesser than you think
I have a version of amp (in fact - all of these autoformer based) with current mirror biasing (same as in Babelfish XA252) which allows direct couplin all the way from input to output, but this si not time to pursue that
maybe in future, when I'm done with all amps (Plethora series) waiting in line to be published
that's practically sole ( serious) cap in signal path .... but it's sonic footprint ( if made as I made it - Silmic+MKC bypass) is much lesser than you think
I have a version of amp (in fact - all of these autoformer based) with current mirror biasing (same as in Babelfish XA252) which allows direct couplin all the way from input to output, but this si not time to pursue that
maybe in future, when I'm done with all amps (Plethora series) waiting in line to be published
I thought plethora was Greek for 'a lot', but the Cambridge English Dictionary says: ....especially a larger amount than you need, want or can deal with.
Surely not? 😁😁😁😁
Surely not? 😁😁😁😁
Can someone point me towards the best place to buy the Cinemag Autoformers in the UK, or will I have to import?
Which one do I want to go for?
Thanks
Which one do I want to go for?
Thanks
Ah! Sarf Lunnon's diffrent, innit? From living there or watching Only Fools and Horses?Lovely Jubbly
ZMEngrish having more roots in Peckham than in Cambridge....... go figure