FIELD: electrical communication engineering.
SUBSTANCE: invention relates to a power supply for a two-wire communication line for transmitting signals between electronic devices as well as for transmitting signals between electronic devices and powering same. Compensation of a noise signal is achieved in that the power supply, which comprises a primary two-pole power supply, additionally comprises a secondary two-pole power supply, the poles of which are connected to the wires of the communication line as well as to the like poles of the primary power supply via equal value resistors.
EFFECT: device makes it possible to increase communication range and reliability by improving noise protection through the compensation of a noise signal in the wires of a communication line.
1 cl, 3 dwg
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