ELECTRONIC INDUCTIVE CIRCUIT FOR POWER SUPPLY SOURCE OF INTERCOM SYSTEM WITH DOUBLE-WIRE BUS AND ITS ARRANGEMENT Russian patent published in 2015 - IPC H03H11/48 

FIELD: electricity.

SUBSTANCE: electronic inductive circuit for power supply source of intercom system with double-wire bus comprises the following: the main circuit line that includes an inductor coil and source output and FET drain output between input lead and output lead of the electronic inductive circuit, at that the inductor coil is coupled with FET drain output; resistor and protective diode are coupled to the inductance coil in parallel individually; auxiliary circuit line through inductor coil coupled in series to the second resistor between the above input lead and the above output lead, at that the auxiliary circuit line is connected in parallel to the main circuit line.

EFFECT: large direct current is provided with large alternate current impedance.

10 cl, 4 dwg