Electrical transmission or interconnection systems – Superimposed unlike currents – Ac and dc sources
Patent
1985-06-04
1986-10-28
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Superimposed unlike currents
Ac and dc sources
307 43, 307 72, H02J 500
Patent
active
046201084
ABSTRACT:
A circuit for combining independently controlled AC and DC voltages in which AC and DC voltages are respectively applied to different inputs of a first amplifier, its output is connected to a first output terminal, the DC voltage is applied to the input of a second amplifier, its output is connected to a second output terminal that is grounded for AC, a voltage divider is connected between said output terminals and the gains of the amplifiers for DC are the same.
REFERENCES:
patent: 3047727 (1962-07-01), McAllise
patent: 3093783 (1963-06-01), Hass
patent: 4156150 (1979-05-01), Harrigan et al.
patent: 4170739 (1979-10-01), Frusztajer et al.
Hewlett--Packard Company
Logan Sharon D.
Shoop Jr. William M.
Timbie Donald N.
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