Electrical transmission or interconnection systems – Plural load circuit systems – Control of current or power
Patent
1995-03-29
1995-12-12
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Plural load circuit systems
Control of current or power
307 86, 364707, 395750, G06F 130
Patent
active
054752710
ABSTRACT:
A power source device of an expansion unit determines whether an electric device is connected to the expansion unit, and supplies an operating power source voltage CC to the electric device only when the electric device is connected to the expansion unit. Further, the power source device outputs a preset command to the electric device, and supplies a charging power source voltage B-CC to the electric device in accordance with device kind indicating information output from the electric device in response to the preset command. Also, when the power supply device of the expansion unit is in an abnormal state, the power supply device of the expansion unit detects the abnormal state, and outputs the electric device to a state signal representing the abnormal state and execute power source interruption processing of the power source device. In the electric device, power source interruption processing of a power source device of the electric device is performed in response to the state signal.
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Ohashi Yasuhiro
Shibasaki Kazuya
Elms Richard T.
Kabushiki Kaisha Toshiba
Shoop Jr. William M.
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