Electric power conversion systems – Current conversion – With means to connect the input to diverse power sources
Patent
1989-02-17
1989-12-26
Shoop, Jr., William M.
Electric power conversion systems
Current conversion
With means to connect the input to diverse power sources
363 21, H02M 704
Patent
active
048902179
ABSTRACT:
In a point of sale terminal it was desired to incorporate a variety of input/output devices, e.g. CRT display, disk drives and a printer in a compact hosuing, e.g. about 16 inches wide by 12 inches in depth (without frontally projecting keyboard) by about 11 inches high. The illustrated switching power supply occupies a rectilinear space of less than 155 cubic inches and has the capability of operating from either 110 or 220 VAC, 50 or 60 hertz, or from battery power, with essentially constant volt-second product, while supplying a maximum average output power greater than 120 watts, and a peak output power of greater than 280 watts.
REFERENCES:
patent: 4313060 (1982-01-01), Fickenscher et al.
patent: 4315303 (1982-02-01), Snyder
patent: 4389702 (1983-06-01), Clemente et al.
patent: 4459651 (1984-07-01), Fenter
patent: 4590546 (1986-05-01), Maile
patent: 4686616 (1987-08-01), Williamson
Yasumatsuya et al., "AC--DC Switched Mode Power Supply in Color Television Receiver for France", National Technical Report, vol. 20, No. 6, pp. 801-809, (Dec. 1974).
Hoff Marc S.
Norand Corporation
Shoop Jr. William M.
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