Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1990-10-30
1992-09-01
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307300, 307544, 307548, 3072967, H03K 333, H03K 301
Patent
active
051441721
ABSTRACT:
A circuit for detecting the current in an MOS type power transistor comprises a detection transistor (T2) connected with its drain and gate in common to the power transistor (T1) and having characteristics such that the current flowing through it is equal to a fraction of the current (I1) flowing through the power transistor (T1). Downstream from the detection transistor (T2) is a comparison transistor (T6, T13) for comparing a first current (I3), which is equal to a fraction of the current flowing through the detection transistor, with a second or reference current (Ig1) having a pre-set value. The comparison transistor (T6, T13) produces a detection signal of the value of the current in the power transistor (I1) in relation to the difference between the first current (I3) and the reference current (Ig1).
REFERENCES:
patent: 4251743 (1981-02-01), Hareyama
patent: 4319181 (1982-03-01), Wrathall
patent: 4587442 (1986-05-01), Gray et al.
patent: 4750079 (1988-06-01), Fay et al.
patent: 4820968 (1989-04-01), Wrathall
patent: 4943737 (1990-07-01), Guo et al.
Palara Sergio
Tagliavia Donato
Miller Stanley D.
SGS--Thomson Microelectronics S.r.l.
Tran Sinh
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