Circuit for regulating a DC voltage on which a large AC voltage

Details Circuit for regulating a DC voltage on which a large AC voltage Circuit for regulating a DC voltage on which a large AC voltage

1977-12-16

1979-05-22

Hix, L. T.

Electrical transmission or interconnection systems

Superimposed unlike currents

Ac and dc sources

307 56, 179 84R, 323 9, 323 22T, 323 32, H02J 302, G05F 500

Patent

active

041561503

ABSTRACT:
Disclosed is a ringing power supply for developing a ringing signal having an AC voltage combined with a regulated DC voltage, of magnitude smaller than the magnitude of the AC voltage, from a source having the AC signal combined with an unregulated DC voltage. The ringing power supply comprises a control circuit responsive to the AC and DC voltages of the source for developing a replica signal of the regulated DC voltage with its superimposed AC voltage, and a regulator responsive to the developed replica signal and to the source for providing the desired ringing signal.

REFERENCES:
patent: 3134913 (1964-05-01), Pederson
patent: 3748391 (1973-07-01), Shaffer
patent: 4015091 (1977-03-01), Rao
"Economical Series Regulator Supplies up to 10 Amperes", J. E. Buchanan, C. W. Nelson Electronics, Jan. 24, 1974, p. 90.

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