Direct current voltage regulating circuitry

Details Direct current voltage regulating circuitry Direct current voltage regulating circuitry

1975-04-23

1977-01-25

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

323 1, 323 22T, G05F 156

Patent

active

040053539

ABSTRACT:
In series in a load current path between an input terminal and an output terminal is connected a variable resistance element having a control terminal to constitute a series-type direct current voltage regulating circuitry. An error amplifier includes a field effect transistor (FET) having a triode characteristic, a constant current circuit as a load in the drain circuit and a variable resistor in the source circuit to provide a variable reference voltage. The voltage at the output terminal is divided by a resistor network and applied to the gate of FET. The drain voltage of the FET is applied to the control terminal of the variable resistance element. Such a configuration provides a simple circuit arrangement and an excellent voltage regulation.

REFERENCES:
patent: 3417319 (1968-12-01), Shaughnessy
patent: 3562729 (1971-02-01), Hurd
patent: 3571694 (1971-03-01), Hunger et al.
patent: 3577063 (1971-05-01), Hurd
patent: 3875430 (1975-04-01), Prak
patent: 3899693 (1975-08-01), Gaudreault
Wu, "Designing Power Supplies with FETs", EEE, Dec. 1968, vol. 16, No. 12, pp. 68, 69.

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