ruffrecords
Well-known member
Which is the root cause of the well documented "pin 1" problem. They serve different purposes and the way and where they are connected together is very important. This is not reflected in your schematic.
Cheers
Ian
Small valve mixing console
- Thread starter C.B. - Boudio
- Start date
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Cheers
Ian
MidnightArrakis
Well-known member
[This is not reflected in your schematic] -- It may be helpful to the OP if you provided either a hand-sketch or a KiCAD-sketch of how things are supposed to be so he can more easily "see" and understand the concept you are attempting to convey. That way, he can then update his schematic and finally have his schematic "grounding scheme" drawn and implemented correctly. How about it?
Otherwise, he just might get caught up in a "Ground Loop" of constant schematic changes and updates!!! (Low-level humor intended).
/
RCA Grounding Instructions
Any amplifier having two or more stages should be constructed with a straight-line layout so that maximum separation is provided between the signal input and output circuits and terminals.
Power-supply connections, particularly those carrying ac, should be isolated as far as possible from signal connections, especially from the input connection. Signal-carrying conductors, even when shielded, should not be cabled together with power-supply conductors.
Internal wiring for ac-operated tube heaters, switches, pilot-light sockets, and other devices, should be twisted and placed flat against the chassis.
All connections to the ground side of the circuit in each unit should be made to a common bus of heavy wire. This bus should be connected to the chassis only at the point of minimum signal voltage, i.e., at the signal-input terminal of the unit.
best
DaveP
Any amplifier having two or more stages should be constructed with a straight-line layout so that maximum separation is provided between the signal input and output circuits and terminals.
Power-supply connections, particularly those carrying ac, should be isolated as far as possible from signal connections, especially from the input connection. Signal-carrying conductors, even when shielded, should not be cabled together with power-supply conductors.
Internal wiring for ac-operated tube heaters, switches, pilot-light sockets, and other devices, should be twisted and placed flat against the chassis.
All connections to the ground side of the circuit in each unit should be made to a common bus of heavy wire. This bus should be connected to the chassis only at the point of minimum signal voltage, i.e., at the signal-input terminal of the unit.
best
DaveP
