Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...
Patent
1996-07-31
1998-03-17
Berhane, Adolf
Electricity: power supply or regulation systems
Self-regulating
Using a three or more terminal semiconductive device as the...
323316, 323267, 323272, G05F 322, G05F 326
Patent
active
057291225
ABSTRACT:
Constant-current circuitry supplying constant current so as to drive a plurality of circuit blocks using a plurality of drive circuits. The constant-current circuitry includes not only a plurality of transistors for supplying current to the drive circuits, but also a bias circuit for supplying a predetermined voltage to the bases of the transistors. The bases of the transistors are commonly connected, and the emitters of the transistors are connected to the drive circuits. Such constant-current circuitry prevents the circuit blocks from interfering with each other.
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patent: 4758820 (1988-07-01), Tateno
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patent: 5029295 (1991-07-01), Beunett et al.
patent: 5570009 (1996-10-01), Nakamura
Berhane Adolf
Canon Kabushiki Kaisha
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