Two-wire switch

Details Two-wire switch Two-wire switch

1987-04-27

1988-05-17

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Switching systems

307321, 307257, 323324, 323325, 323326, H03K 1700

Patent

active

047453001

ABSTRACT:
The invention relates to a two-wire switch for connecting a load to an ac ltage source, and, in particular, to a two-wire switch with an auxiliary voltage source. A capacitor acting as charge storage device can be charged by the auxiliary voltage source which operates on the principle of phase angle control. In accordance with the invention, a series connection comprising a threshold element which can be brought into the conducting state when there is a prescribed minimum voltage across the capacitor, and a diode is inserted into a control current circuit for a controllable semiconductor device on the input side of the bridge.

REFERENCES:
patent: 3146392 (1964-08-01), Sylvan
patent: 3226627 (1965-12-01), Fromkin
patent: 3328606 (1967-06-01), Pinckaers
patent: 3333112 (1967-07-01), Vercellotti
patent: 3372328 (1968-03-01), Pinckaers
patent: 3438023 (1969-04-01), Apitz
patent: 3486038 (1969-12-01), Skamter et al.
patent: 3487292 (1969-12-01), Tibbetts
patent: 3509377 (1970-04-01), Clark et al.
patent: 4168443 (1979-09-01), Periot
patent: 4600877 (1986-07-01), Soderholm

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