CABLE SIGNAL DETECTOR

• US 20160104362A1
• Filed: 10/01/2015
• Published: 04/14/2016
• Est. Priority Date: 10/08/2014
• Status: Abandoned Application

• Current Assignee: Hitachi Metals (Thailand) Ltd.
• Original Assignee: Hitachi Metals (Thailand) Ltd.
• Inventors: SHIRAKAWA, Yohei, HIRANO, Koki, AGElSHI, Yoshitake
• Application Number:
  US14/873,095
• Publication Number:
  US 20160104362A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01R 31/69 of terminals at the end of a cable or a wire harness; of plugs; of sockets, e.g. wall sockets or power sockets in appliances

Abstract

A cable signal detector for a connector at an end of a communication cable or for a relay connector connected with the connector includes a rectifier circuit that branches and extracts a portion of signal transmitted through the communication cable, rectifies the extracted signal into a DC signal and outputs the DC signal, a comparator that outputs a predetermined voltage signal if a voltage of the DC signal is not less than a preset threshold voltage, and a light-emitting circuit that emits light when the comparator outputs the predetermined voltage signal.

Claims

1. A cable signal detector for a connector at an end of a communication cable or for a relay connector connected with the connector, comprising:

a rectifier circuit that branches and extracts a portion of signal transmitted through the communication cable, rectifies the extracted signal into a DC signal and outputs the DC signal;

a comparator that outputs a predetermined voltage signal if a voltage of the DC signal is not less than a preset threshold voltage; and

a light-emitting circuit that emits light when the comparator outputs the predetermined voltage signal.

2. The cable signal detector according to claim 1, further comprising a matching circuit for adjusting a level of the extracted signal.

3. The cable signal detector according to claim 1, further comprising an amplifier circuit that amplifies the extracted signal into an amplified signal and outputs the amplified signal to the rectifier circuit.

4. The cable signal detector according to claim 2, further comprising an amplifier circuit that amplifies the extracted signal into an amplified signal and outputs the amplified signal to the rectifier circuit.