Automatic line monitor

Details Automatic line monitor Automatic line monitor

1989-06-12

1990-06-12

Beha, Jr., William H.

Electric power conversion systems

Current conversion

With means to connect the input to diverse power sources

363 61, 363 81, H02M 710

Patent

active

049338323

ABSTRACT:
An automatic line monitor for use in conjunction with a power supply for electronic components automatically accommodates either of two voltage ranges. Since the power supply may operate in domestic voltage ranges of about 100 volts or in international voltage ranges of about 120, the automatic line monitor senses and automatically switches to a voltage-doubling mode for the domestic range or a non-voltage-doubling mode for the higher international range. A latch may latch the line monitor in a non-voltage doubling mode once the higher voltage range is sensed. A monitor of a preferred embodiment eliminates almost all of the high-power-handling elements of the switch so that almost all of the operative elements of the switch may be incorporated on a single integrated circuit chip.

REFERENCES:
patent: 4665323 (1987-05-01), Russel et al.
patent: 4780805 (1988-10-01), Chewuk et al.
patent: 4845607 (1989-07-01), Nakao et al.
"Automatic Input-Selecting Power Supply," IBM Tech. Discl. Bul., vol. 28, No. 3, pp. 1246, 1247, Aug. 1985.

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