I really didn't want to post this since I have read so much here on other Grounding threds, but here it goes.
I have to laugh man(or scream). Everything goes smoothly until I get to the grounding phase of a project. The last box of @PI's used RogerFoote's and Kieth's(sssltech's) scheeme where the PWR xfmr center tap was to chassis star, which went to JLM PSU 0VAC and I discarded the Audio Ground thing with no hum. (well other than pwr xfmr radiation in ch 4)
Anyway here I have a bunch of other stuff that's not as simple
25V avel lindberg -No CT- connected in parallel.
JLM PSU: 10R and cap to chassis
283BA & Hotrod: 10R to chassis
-HR also has chassis point, but this would have to go through the PS network to make it to 0VU and seems best to connect one or the other, right?
Carnhills: chassis gnd to chassis. No?
Relay Control PCBs on front with LEDs
Phantom cap neg and Relays share 0V on it's own PCB
Discrete 24V DI 0V -this uses a BJT to send 48V to relay PCB when ring and sleve short to ground.
It seems like a mess of ground references. Any thoughts?
PS. next plan is to figurte out how to set up a Constant current source and really mess things up.
I have to laugh man(or scream). Everything goes smoothly until I get to the grounding phase of a project. The last box of @PI's used RogerFoote's and Kieth's(sssltech's) scheeme where the PWR xfmr center tap was to chassis star, which went to JLM PSU 0VAC and I discarded the Audio Ground thing with no hum. (well other than pwr xfmr radiation in ch 4)
Anyway here I have a bunch of other stuff that's not as simple
25V avel lindberg -No CT- connected in parallel.
JLM PSU: 10R and cap to chassis
283BA & Hotrod: 10R to chassis
-HR also has chassis point, but this would have to go through the PS network to make it to 0VU and seems best to connect one or the other, right?
Carnhills: chassis gnd to chassis. No?
Relay Control PCBs on front with LEDs
Phantom cap neg and Relays share 0V on it's own PCB
Discrete 24V DI 0V -this uses a BJT to send 48V to relay PCB when ring and sleve short to ground.
It seems like a mess of ground references. Any thoughts?
PS. next plan is to figurte out how to set up a Constant current source and really mess things up.