Secondary electric power source produced by current flow through

Details Secondary electric power source produced by current flow through Secondary electric power source produced by current flow through

1989-02-21

1990-08-14

Wong, Peter S.

Electrical transmission or interconnection systems

Plural load circuit systems

Serially connected load circuits

323223, 323230, 323239, 323324, H02J 300

Patent

active

049489879

ABSTRACT:
Voltage drop developed across a transformer primary winding coupled in series with a primary a.c. power circuit including an a.c. power source and an a.c. load is utilized to provide a secondary source of a.c. power having secondary voltage level stability which is substantially independent from otherwise influential changes in primary power circuit levels. Secondary power stabilization is mainly established by constant voltage limiting of the primary winding excitation by the forward voltage drop developed across an arrangement of semiconductor junctions coupled in parallel with the primary winding. The transformer may be used to change the source level of the secondary a.c. power which is produced, and to obtain electrical isolation between the primary power circuit and any ancillary circuits coupled with the secondary a.c. power source.

REFERENCES:
patent: 3402339 (1968-09-01), Abrams
patent: 3873906 (1975-03-01), Perleman et al.
patent: 4270058 (1981-05-01), Schornack
patent: 4300090 (1981-11-01), Weber
patent: 4336464 (1982-06-01), Weber
patent: 4504778 (1985-03-01), Evans
patent: 4668908 (1987-05-01), Aoki et al.
patent: 4878010 (1989-10-01), Weber

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