This is a question about the Ethernet communication switch circuit.

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myksj1105
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Joined: Sun Jun 18, 2023 11:35 am

This is a question about the Ethernet communication switch circuit.

Post by myksj1105 »

This is a question about the Ethernet communication switch circuit.

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hello. There is a project I want to make.

This is switching Ethernet communication.

I'm trying to make it using 'multiplexer'.

But a problem arose. There is no connection between the RJ-45 signal and the gnd of the 'multiplexer' chip.

The 'multiplexer' chip has an analog signal range of
-15VDC ~ 15VDC.

The potential (voltage, GND) between RJ-45 and the 'multiplexer' must be correct for the signal to be distributed through the 'multiplexer'. I am curious how I can make it have gnd.
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