Patent
1975-01-20
1976-07-06
Shoop, William M.
3171555, 317DIG6, 321 47, H02H 704
Patent
active
039684067
ABSTRACT:
This d.c. electromagnet having a rectifying device designed for operating from an a.c. mains utilizes a pair of diodes. The winding structure comprises a first winding supplied through a first diode and a second winding which, in conjunction with said first winding and a second diode, constitutes a loop circuit, the arrangement being such that any surge-voltage applied to any one of the two diodes is applied through at least one of the first and second windings, whereby the diodes are protected against such surge-voltages.
REFERENCES:
patent: 3154725 (1964-10-01), Kadah
patent: 3172019 (1965-03-01), Ragonese
patent: 3331992 (1967-07-01), Walker
Chauvin Arnoux
Shoop William M.
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