Electrical transmission or interconnection systems – Plural load circuit systems – Plural sources of supply
Patent
1997-01-29
1998-07-07
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Plural load circuit systems
Plural sources of supply
307 72, 307 29, 307 38, 364492, H02J 312
Patent
active
057773971
ABSTRACT:
Electrical equipment such as a personal computer includes a plurality of internal components which require different voltages including low voltages of about five volts for operation. The different voltages are supplied by an internal power supply, with a voltage regulator, which is itself connected to an appropriately-transformed high voltage supply typically from an in-the-wall source. Peripherals such as a FAX/modem, CD ROM, or tape recorder are powered by cables plugged into mating sockets in the face of the computer housing. The sockets, in turn, are connected to the appropriate outputs of the internal power supply to obtain appropriate voltage power directly from the host computer in the absence of a transformed connection to a house supply. A switch is provided at each of the sockets to vary the voltage there.
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patent: 5300864 (1994-04-01), Allen
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patent: 5563782 (1996-10-01), Chen et al.
patent: 5616968 (1997-04-01), Fujii
Paladini Albert W.
Shapiro Herbert M.
Shoop Jr. William M.
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