let's go.The technical field of the design within the scope of the request belongs to: interface device for fax.I.In order to minimize the attenuation of the above data, the data and DC power interface devices are provided on the fax machine.wholeThe gist of the solution is that the DC power supply and the receiving and sending data are used as the interface equipment of the access terminal at the same time,According to the control signal, the switch mode of DC power supply / transfer is started,Connect the above switching means,The DC power supply obtained by the above-mentioned switching means, the low-pass filter output by the node,The signal line with the above data, the low-pass filter and the access end are described,It is composed of the above data and the node provided by the DC power supply to the access terminal.Yes.Important application of the research: when the signal line receiving data and the DC power supply line are connected at the same time through nodes, a low-pass filter is provided in the DC power supply line to receive and receive the above data without locking.
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