Image pickup apparatus

Details Image pickup apparatus Image pickup apparatus

1987-05-19

1992-12-08

Logan, Sharon D.

Electrical transmission or interconnection systems

Plural supply circuits or sources

307 66, 307 29, 307 85, H02J 110

Patent

active

051700697

ABSTRACT:
An electric apparatus capable of using a plurality of power supplies includes a plurality of circuits which are fed with power from one of the plurality of power supplies. Switching circuitry is provided for controlling a sequence of power supplied to the plurality of circuits. Discrimination circuitry is provided for discriminating between the types of power supplies. Control circuitry then changes the sequence of supplying power in accordance with an output from the discrimination circuitry. Preferably, power is supplied to the plurality of circuits substantially simultaneously when a first power supply is used, but power is supplied to the plurality of circuits in a specified order when a second power supply is used. This prevents a power surge when a low-power power supply is used.

REFERENCES:
patent: 3818237 (1974-06-01), Straus
patent: 4345286 (1982-08-01), Kanayama et al.
patent: 4471233 (1984-09-01), Roberts
patent: 4575640 (1986-03-01), Martin
patent: 4788480 (1988-11-01), Field et al.
patent: 4797567 (1989-01-01), Papas
patent: 4816862 (1989-03-01), Taniguchi et al.
patent: 4818891 (1989-04-01), Drinkwater
patent: 4827150 (1989-05-01), Reynal

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