Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1981-09-30
1984-02-14
Beha, Jr., William H.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361194, 363126, 363128, H01H 4704
Patent
active
044320345
ABSTRACT:
An automatic power reduction circuit having a single silicon controlled rectifier in one leg of a bridge rectifier which is gated off when a capacitor reaches a predetermined voltage level so as to switch automatically the bridge output from a full-wave rectifier to a half-wave rectifier. An auxiliary silicon controlled rectifier is also provided to facilitate the quick discharge of the capacitor so as to reset the circuit to its initial state, thereby allowing fast, repeated operations and preventing malfunctioning upon a loss of power.
REFERENCES:
patent: 2970247 (1961-01-01), Hill
patent: 3140429 (1964-07-01), Mais
patent: 3666998 (1972-05-01), Wielebski
patent: 3671761 (1972-06-01), Shibuya et al.
patent: 3737736 (1973-06-01), Stampfli
patent: 3781646 (1973-12-01), Dheilly
patent: 3943416 (1976-03-01), Degenhart
Dietrich Verne E.
Miller Frederick A.
Wohlert Andrew M.
Beha Jr. William H.
Spraying Systems Co.
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