Re: PCB power planes?



Martin Griffith wrote:

Eeyore wrote:
John Larkin wrote:

Splitting grounds is usually a bad idea. Except when it's a terrible
idea.

Except when it's audio of course and you don'y want digital return
currents you can hear in the audio ground. In which case pkysically
separated but carefully linked planes are the way to go in order to
direct the currents where you want them to go rather than randomly
anywhere.


Ha.. I remember a student who said he could make a small audio desk
with the equalisers using MF10's.
Never saw him again....I wonder why?

Was that the NatSemi ? switched capacitor filter ?

No surprise there !

Graham

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Relevant Pages

  • Re: PCB Layout (for ADC and DAC)
    ... to spit the grounds to avoid or alleviate loop currents. ... Audio is very cost sensitive. ... currents which belong to one stage are connected at one point. ... position of the points of connection seem to be optimized. ...
    (sci.electronics.design)
  • Re: PCB Layout (for ADC and DAC)
    ... Until the audio gear is used near a strong transmitter and then any ... split will cause some real birdies. ... As for the EMC ... Doesn't get round the need for currents to have return paths though. ...
    (sci.electronics.design)
  • Re: PCB power planes?
    ... Except when it's audio of course and you don'y want digital return ... currents you can hear in the audio ground. ... not audio but audio range. ...
    (sci.electronics.design)
  • Re: PCB power planes?
    ... John Larkin wrote: ... Except when it's audio of course and you don'y want digital return ... currents you can hear in the audio ground. ...
    (sci.electronics.design)
  • Re: PAL/NTSC to 48Ksample rate
    ... martin griffith wrote: ... Their studio switcher/router gave more problems than the Squeeze Zoom. ... overlaid it on the star field and fed it to the master ... monitor and waited for the audio guy to see it. ...
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