External power source on/off control system

Details External power source on/off control system External power source on/off control system

1995-08-21

1997-08-05

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Connecting or disconnecting

307 85, 364273, 3642731, 3642732, 3642733, 3642734, 3642735, 364492, 39575002, H02J 314

Patent

active

056545932

ABSTRACT:
An interface cable used for electrically connecting a terminal apparatus to a host apparatus. The host apparatus has an internal power source and a switch for turning on/off the internal power source. A cable means is used for electrically connecting an external power source to the terminal apparatus to supply electrical power from the external power source to the terminal apparatus. The external power source on/off control system includes a switch, such as an electromagnetic relay, incorporated in a module connected to the cable, for detecting the on/off state of the internal power source in the host apparatus and turning on or off the external power source on the basis of the on/off state of the internal power source.

REFERENCES:
patent: 4812672 (1989-03-01), Cowan et al.
patent: 4970623 (1990-11-01), Pintar
patent: 5055962 (1991-10-01), Peterson et al.
patent: 5144395 (1992-09-01), Miyajima et al.
patent: 5164609 (1992-11-01), Poppe et al.
patent: 5384491 (1995-01-01), Suizu
patent: 5406128 (1995-04-01), Arinobu

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