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How to apply external voltage to SIP/SOP

Benjamin Weber

Involved In Discussions
Since SIP/SOP with external voltages is a current topic in some discussions here I would like to raise the following question:

Consider a ME equipment which has its own mains supply connection but that is controlled by another PC (no ME equipment) via USB. The ME equipment can only be operated when the PC is connected and a connection is established. If I wanted to apply mains voltage to the USB I couldn't operate the ME equipment properly, e.g. to bring it to its maximum power input. The ME equipment would just be in some kind of standby mode.

Do you think that is OK to do so? Or should I try to bring the ME equipment to operation and simultaneously apply mains voltage to the USB? I don't have any idea how this could be done, to be honest.

Best regrads,
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