Constant current source circuit

Details Constant current source circuit Constant current source circuit

1989-08-03

1990-06-26

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

307450, 357 15, 357 67, 357 68, G05F 324, H01L 2900

Patent

active

049375172

ABSTRACT:
A constant current source circuit, in which first and second FET's are formed, is disclosed. The first FET has a source-drain path connected between power voltage lines and a gate connected to one of the power voltage lines with the source in common. The second FET is connected at its drain to a current output node of the constant current source circuit for supplying a constant current to a circuit coupled to the current output node, and at its gate to the drain of the first FET.

REFERENCES:
patent: 4031456 (1977-06-01), Shimada et al.
patent: 4414737 (1983-11-01), Menjo et al.
patent: 4642552 (1987-02-01), Suzuki et al.
patent: 4727309 (1988-02-01), Vajdic et al.
patent: 4774205 (1988-09-01), Choi et al.
patent: 4775879 (1988-10-01), Robb et al.

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