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EP 0361353 B1 19930428 - DIRECT CURRENT-ENERGISED CONTROL CIRCUIT FOR A SOLENOID VALVE

Title (en)

DIRECT CURRENT-ENERGISED CONTROL CIRCUIT FOR A SOLENOID VALVE

Publication

EP 0361353 B1 19930428 (DE)

Application

EP 89117647 A 19890925

Priority

DE 3832817 A 19880928

Abstract (en)

[origin: EP0361353A1] An intrinsically safe control circuit for a gas solenoid valve compares the mean value of the current flowing in a pulsed fashion through the excitation winding (4) of the valve with the desired value supplied as control direct voltage, and derives therefrom a signal which controls the pulse duty factor of the supply current pulses. <IMAGE>

IPC 1-7

H01H 47/32; H01F 7/18

IPC 8 full level

H01F 7/18 (2006.01); H01H 47/32 (2006.01)

CPC (source: EP)

H01F 7/18 (2013.01); H01H 47/325 (2013.01)

Designated contracting state (EPC)

DE FR GB IT NL

DOCDB simple family (publication)

EP 0361353 A1 19900404; EP 0361353 B1 19930428; DE 3832817 A1 19900329; DE 58904194 D1 19930603

DOCDB simple family (application)

EP 89117647 A 19890925; DE 3832817 A 19880928; DE 58904194 T 19890925