Constant current source or voltage source transistor circuit

Details Constant current source or voltage source transistor circuit Constant current source or voltage source transistor circuit

1983-04-05

1985-08-20

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

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

323314, G05F 320

Patent

active

045367027

ABSTRACT:
According to this invention, a transistor circuit is disclosed which comprises two main circuit portions connected in parallel between a power supply terminal and a reference voltage terminal. They are responsive to the power supply voltage to generate first and second currents respectively when the power supply voltage exceeds predetermined first and second voltage levels respectively. A circuit portion is also provided for producing a constant current equivalent to the difference of said first and second currents.

REFERENCES:
patent: 3648153 (1972-03-01), Graf
patent: 4030023 (1977-06-01), Keith
patent: 4221979 (1980-09-01), Ahmed
patent: 4325017 (1982-04-01), Schade, Jr.
Gray et al., "Analysis and Design of Analog Integrated Circuits", p. 263.

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