Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...
Patent
1984-03-12
1986-04-22
Salce, Patrick
Electricity: power supply or regulation systems
Self-regulating
Using a three or more terminal semiconductive device as the...
323317, 323351, 330257, H03F 345
Patent
active
045845204
ABSTRACT:
A switchable current source circuit having a current mirror and a switch, such switch including a current source coupled to the current mirror, such switch enabling or disabling current from the current source to pass to the input of the current mirror selectively in accordance with a control signal fed to such switch. In one embodiment, the switch includes a differential amplifier and the current source is part of the differential amplifier. One of a plurality of control signals is fed to control the differential amplifier with the differential amplifier serving as both a logic circuit and current source, therefore, reducing the number of circuit comparators required to provide a switchable current source circuit.
REFERENCES:
patent: 4267519 (1981-05-01), Schade
patent: 4325017 (1982-04-01), Schade
patent: 4361816 (1982-11-01), Schade
Motorola, "MC306G 3-Input Logic Gate", Product Release DS 9001-R1, Aug. '63.
Betts et al., "Emitter-Coupled Logic Circuit", IBM Technical Disclosure Bulletin, vol. 15, No. 7, Dec. 72, pp. 2178-2179.
Maloney Denis G.
Raytheon Company
Rebsch D. L.
Salce Patrick
Sharkansky Richard M.
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