Constant voltage output circuit

Details Constant voltage output circuit Constant voltage output circuit

1979-07-19

1981-08-11

Pellinen, A. D.

Electricity: power supply or regulation systems

Self-regulating

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

330296, G05F 318

Patent

active

042836743

ABSTRACT:
This invention relates to a constant voltage output circuit using, as its reference potential source, power source feed terminals for feeding a power source voltage to a reference potential source of a given circuit. The constant voltage output circuit includes a series circuit of an npn transistor and a pnp transistor interposed between the reference potential source of the given circuit and the power source feed terminals, means for biasing the base potential of the pnp transistor by a predetermined potential with respect to the potential of the power source feed terminals, and an emitter follower circuit disposed in the collector output circuit of the npn transistor of the series circuit, and forming a negative feed-back circuit.

REFERENCES:
patent: 3742338 (1973-06-01), Sugano et al.
patent: 4030023 (1977-06-01), Keith
patent: 4103249 (1978-07-01), Burdick
Delarue et al., "Circuit Presenting a High Input Impedance", IBM TDB, vol. 19, No. 11, Apr. 1977, pp. 4221, 4222.

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