Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1991-11-14
1993-08-10
Westin, Edward P.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307451, 3072968, 323316, H03K 1716, H03K 1720
Patent
active
052352188
ABSTRACT:
This invention discloses a switching constant current source circuit including a first current path for supplying a constant current, a first MOS transistor, one end of a current path of which is connected to the first current path, the other end of the current path of which is connected to a second current path, and a gate of which is applied with a digital signal corresponding to a logical amplitude, a second MOS transistor, one end of a current path of which is connected to the first current path, the other end of the current path of which is connected to a third current path, and which performs a switching operation complementary with the first MOS transistor, and level conversion means for fetching a change in voltage in the first current path caused by a change in current flowing through the first current path according to an operation of the first MOS transistor in response to the digital signal, and alternately applying a first level for disabling the second MOS transistor, which operates complementarily with the first MOS transistor, and a second level for enabling the second MOS transistor to output a predetermined current.
REFERENCES:
patent: 4495425 (1985-01-01), McKenzie
patent: 4885477 (1989-12-01), Bird et al.
patent: 4928056 (1990-05-01), Pease
patent: 5087891 (1992-02-01), Cytera
patent: 5124632 (1992-06-01), Greaves
Fujii Shinji
Kasai Kazuhiko
Matsuo Kenji
Noine Yasukazu
Kabushiki Kaisha Toshiba
Sanders Andrew
Westin Edward P.
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