Reply to "Constant voltage 9 volt power supply"

stan2004OGR Forum Member

But that's exactly my point. If possible I suggest using a common ground between whatever DC power supply the audio amp is using and whatever DC power supply the source of the audio is using. Presumably the source of the audio is coming from some DC-powered IC chip where ground is the DC- from the bridge rectifier of the engine electronics (Lionel, MTH, whoever).

4/5/205:04 PM

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