Cable signal detector
AssigneeHitachi Metals, Ltd.
InventorsYohei SHIRAKAWA, Koki HIRANO, Yoshitake AGElSHI
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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.
Claims4
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.
Dependencies are inferred from the claim text.