While making a PCB layout should we keep signal, Zobel, and decoupling caps grounds completely isolated? and run separate wires to the power supply ground T ? or is it required to have a connection between them in the PCB?
To which ground the constant current source ground can be combined?
To which ground the constant current source ground can be combined?
Decoupling capacitor returns should always go directly to the pcb ground plane to provide a low inductance path
and small loop area. Same for the signal common connections and the ccs.
The Zobel should have a low inductance path to the power supply common, since it can handle significant
levels of high frequency current. The 10R should have a power rating of several watts.
and small loop area. Same for the signal common connections and the ccs.
The Zobel should have a low inductance path to the power supply common, since it can handle significant
levels of high frequency current. The 10R should have a power rating of several watts.
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I read somewhere that combining signal ground with the high current ground may produce distortion if signal and decoupling ground go to the same ground plane wont there be an increase in distortion?
Best practice is to make a star ground at ground (0) terminal of PCB. LS return should go to power supply star ground connection. You can check distortion level at LT Spce simulation. I had modified Circlophone PCB layout with same principle and got fantastic results.
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The high current (speaker return) common goes to the power supply common, like the Zobel.
The small signal common goes to a stub off of the power supply common.
if you look at the group buy forums, you will come across some pcb designs
(just where are those projects?)
(just where are those projects?)
Thanks for the suggestions, Here is a layout I tried for the above-posted schematics. Is it ok to connect the Zobel ground to decoupling ground on the same track and connect the signal ground to that through a 10ohm resistor?
