公开(公告)号：US20140232370A1

公开(公告)日：2014-08-21

申请号：US14347342

申请日：2012-04-16

Applicant: ABB TECHNOLOGY LTD.

Inventor： Dalin Zhou ,  Yangpeng Zhang ,  Mingyuan Liu

IPC: H03H11/48 ,  H04M19/00

CPC classification number: H03H11/48 ,  H03H11/0427 ,  H04M19/00

Abstract: The present invention discloses an electronic inductance circuit for the power supply of a 2-wire bus intercom system and a device thereof. The electronic inductance circuit comprises a main circuit path along an inductor and a source terminal and a drain terminal of a FET between the input terminal and the output terminal of said electronic inductance circuit, in which said inductor is connected to said source terminal of said FET; a resistor and a freewheeling diode individually connected to said inductor in parallel; and a secondary circuit path along a capacitor connected with a second resistor in series between said input terminal and said output terminal, which is connected to said main circuit path in parallel. The solutions of the present invention achieve larger direct current power supply for the 2-wire intercom system and stable alternating current impedance with fast response to the DC power supply.

Abstract translation: 本发明公开了一种用于2线总线对讲系统的电源的电子电感电路及其装置。 电子电感电路包括沿着电感器的主电路路径，以及在所述电子电感电路的输入端子和输出端子之间的FET的源极端子和漏极端子，其中所述电感器连接到所述FET的所述源极端子 ; 电阻器和续流二极管并联连接到所述电感器; 以及沿着与所述输入端子和所述输出端子串联连接的第二电阻器的电容器的次级电路路径，其并联连接到所述主电路路径。 本发明的解决方案实现了对于2线对讲系统的更大的直流电源和对直流电源具有快速响应的稳定的交流阻抗。