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Old 13th September 2021, 06:52 PM
Richard Richard is offline
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Join Date: Dec 2005
Location: Notts
Posts: 5,204
Default Re: Signal earth lift explanation

Many schematics (not just WAD and WD) are not clear exactly if and how an earth lift has been fitted.

In the case of WD88VA there would be no earth lift if the circuit was constructed as per the circuit drawings although the details may be in the text. Correct me if Iím wrong but,

On the Circuit Diagram, the 2 earth symbols should be labelled Signal Ground 0V and the symbols changed to empty triangles pointing downwards.

On the PSU Diagram, the earth symbol should be labelled Mains and Chassis Earth. A Signal Ground 0V connection should then be drawn down from the meeting point of R29/R29/C12/C13 and labelled as such to show the connection to those on the circuit.
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