Small delay...but don't have progress here
Maybe some can look over it.
This is my second PCB. M first try es with recommended Toshibas now I change to Fairchild (2k trimmers for P1,P2)
and check the JFets. For my I don't get it now.....but I have a lot of Hifi gear here, so I'm not blocked for my sound sessions..
Maybe some can look over it.
This is my second PCB. M first try es with recommended Toshibas now I change to Fairchild (2k trimmers for P1,P2)
Attachments
@DIYHarry -
This is more a question for others and a learning chance for me... So, apologies if this is completely irrelevant. Maybe, I'll get lucky...
Is this a case where the flywires have maybe put too much 'distance' between the MOSFETs and the source and/or gate stopper resistors?
I've seen that mentioned in a few situations. Typically that's for MOSFETs for power amp output stages though. I fully, 100% admit that I don't know if that's the situation here. I also have no idea if that's how that problem manifests itself as a symptom or if it even applies.
This is more a question for others and a learning chance for me... So, apologies if this is completely irrelevant. Maybe, I'll get lucky...
Is this a case where the flywires have maybe put too much 'distance' between the MOSFETs and the source and/or gate stopper resistors?
I've seen that mentioned in a few situations. Typically that's for MOSFETs for power amp output stages though. I fully, 100% admit that I don't know if that's the situation here. I also have no idea if that's how that problem manifests itself as a symptom or if it even applies.
Off topic maybe, are there any opinions on that particular scope? Seems to have good reveiws and price. Been watching forum pics for scopes to buy for years.
Danke, H.
Thanks!
Mil-Spec Coax, 50 Ohm, RG-178, 30 AWG (7x38) Silvered Copper Covered Steel Conductor,
PTFE Insulation, 95% Silvered Copper Braid Shield, FEP Jacket,
Commercial, non-QPL
I wonder if I should be concerned about the steel conductor? Maybe it
doesn,t matter as perhaps an audio signal passes on the outer skin
which is silver copper?
https://catalog.belden.com/techdata/EN/83265_techdata.pdf
Mil-Spec Coax, 50 Ohm, RG-178, 30 AWG (7x38) Silvered Copper Covered Steel Conductor,
PTFE Insulation, 95% Silvered Copper Braid Shield, FEP Jacket,
Commercial, non-QPL
I wonder if I should be concerned about the steel conductor? Maybe it
doesn,t matter as perhaps an audio signal passes on the outer skin
which is silver copper?
https://catalog.belden.com/techdata/EN/83265_techdata.pdf
it was not the measurement.....it was the desk power supply cabling.... I fix this on Wednesday and finally I got a confirmation from stuartmp with his video https://www.diyaudio.com/community/...he-wolverine-build-thread.385920/post-7515968
so to all...DO NOT wire GND-PE with your floating supply...for some reasons I overlook this topic....past erros apear due a ground loop from supply-wave generator- and scope----I knew it...put dont look there...
please see correct calbing below..
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This scope is very ok, but there a lot of others.
I can recommend YT kiss Analog, he also show e.g. micsig scopes
