Constant voltage circuit

Details Constant voltage circuit Constant voltage circuit

1991-12-09

1993-04-27

Voeltz, Emanuel T.

Electricity: power supply or regulation systems

Self-regulating

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

323314, 3072961, 3072966, G05F 330

Patent

active

052065812

ABSTRACT:
In a constant voltage circuit, when a second resistor element is inserted between the base and collector of a first transistor and between the other terminal of a first resistor element and the base of a second transistor, a basic equation for calculating a bandgap voltage reference can be calculated free from a base-emitter voltage of the third transistor. Therefore, since a change in base-emitter voltage on the basis of a change in current flowing through the third transistor does not appear as an output voltage, the output voltage can be stabilized.

REFERENCES:
patent: 3617859 (1971-11-01), Dobkin et al.
patent: 3893018 (1975-07-01), Marley
patent: 4059793 (1977-11-01), Ahmed
patent: 4644257 (1987-02-01), Bohme et al.
Japanese Utility Model Publication (Kokai) No. 64-21418 (Z. Zoshida); Feb. 2, 1989, pp. 35-37.

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