Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1977-08-24
1979-09-11
Olms, Douglas W.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307270, 307315, H04R 504
Patent
active
041676491
ABSTRACT:
A current mirror circuit comprised of three transistor devices, each transistor device including an input terminal and first and second output terminals. Two of the devices have their input terminals connected together and one output terminal of each device is connected to a respective current output terminal. The other output terminal of each device is adapted to be supplied with an operating voltage. Each of the first and second transistor devices is formed of at least a pair of transistors connected in Darlington-type configuration. In one embodiment, these Darlington-connected transistors are of complementary types. The third transistor device has its input terminal coupled to one of the current output terminals and one of its output terminals coupled to the common-connected input terminals of the first and second transistor devices. The remaining output terminal of the third transistor device is coupled to a reference potential. The third transistor device also is formed of at least a pair of transistors connected in Darlington-type configuration. In one embodiment, a current feedback resistor is connected to one output terminal of each of the first and second transistor devices. In another embodiment, each of the first and second transistor devices includes one transistor whose base is supplied with current by another transistor, this base being coupled to the current output terminal by a bias resistor.
REFERENCES:
patent: 3233125 (1966-02-01), Buie
patent: 3246210 (1966-04-01), Lorenz
patent: 3281639 (1966-10-01), Potter et al.
patent: 3843933 (1974-10-01), Ahmed
patent: 3887879 (1975-06-01), Radovsky
patent: 4049918 (1977-09-01), Ohsawa
Nakazawa Hiroshi
Ohsawa Mitsuo
Yamagishi Hiroshi
Eslinger Lewis H.
Olms Douglas W.
Sinderbrand Alvin
Sony Corporation
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