Current source whose output increases as control voltages are ba

Details Current source whose output increases as control voltages are ba Current source whose output increases as control voltages are ba

1992-03-03

1993-01-26

Sikes, William L.

Electrical transmission or interconnection systems

Plural supply circuits or sources

3072961, 3072993, 307243, 307529, 328156, 328158, 323315, B60T 1718, H03K 501

Patent

active

051824620

ABSTRACT:
A novel circuit is taught to provide a smooth current transfer function over a range of two input voltages, so that power can be supplied to an electronic circuit from more than a single power source. In one embodiment such power sources include a battery and an DC supply operated off the AC mains. Associated with each such supply is a current source designed to provide a reference current. This reference current is used to establish mirror currents from each of the power leads in order to provide the desired output current.

REFERENCES:
patent: 3648154 (1972-03-01), Frederiksen et al.
patent: 4157493 (1979-06-01), Monticelli
patent: 4214176 (1980-07-01), Kushner
patent: 4543522 (1985-09-01), Moreau
patent: 4613809 (1986-09-01), Skovmand
patent: 4638175 (1987-01-01), Bradford et al.
patent: 4642551 (1987-02-01), Miller
patent: 4799037 (1988-10-01), Locascio
patent: 5034626 (1991-07-01), Pirez et al.

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