Line powered voltage regulator

Details Line powered voltage regulator Line powered voltage regulator

1974-08-28

1976-10-05

Goldberg, Gerald

Electricity: power supply or regulation systems

Remote sensing

307304, 323 9, 323 39, 178DIG11, G05F 158

Patent

active

039847616

ABSTRACT:
A line powered voltage regulator for producing a regulated voltage from the tip and ring terminals of a telephone line for low-powered circuit applications provides a high a-c impedance, low-current drain, and a very low temperature coefficient over a broad temperature range. The regulator utilizes a voltage sensor having matched transistors formed on a bipolar chip and IGFET elements formed on an IGFET chip for starting the regulator. The voltage sensor has high gain for providing a large control voltage for small changes in the load and for eliminating the effects that aging and temperature of the elements of the regulator might have on the regulation.

REFERENCES:
patent: 3508084 (1970-04-01), Warner, Jr.
patent: 3617859 (1971-11-01), Dobkin et al.
patent: 3626278 (1971-12-01), Matsumura et al.
patent: 3761801 (1973-09-01), Sheng
patent: 3828240 (1974-08-01), Keller et al.

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