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Multistar Ground with daisy chain vs groundplane

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DA-Drummer

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hello people,

I am currently working on a desing of the Soldano SLO100 preamp, and i have read some stuff out of "design tube preamps for guitar and bass"
And it says a multi star ground with daisy chain is better then a normal ground star where you connect everything on the same ground.

So i was Wondering witch one is better, because i pcb design with independent ground plane's is hard to design, and the power comes from another pcb so i have to wire 3 more ground lines.

Cheers, Da-Drummer
 

chuckey

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Tube amplifiers are a lot more critical on their grounding requirements with amps of filament current running around and the high input impedance of the tubes. Solid state should be easy. look at the circuit, outputs on the right hand side, i/ps on left? feed the PSU into the Rh. side and keep the decoupling capacitors sort of aligned. i.e. don't connect the - end of a decoupling capacitor which is on the Lh. side of the circuit to the ground on the Rh. side. This will keep the circulating currents to a minimum.
Frank
 

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