Time-proportioning control system for earth-working machines

Details Time-proportioning control system for earth-working machines Time-proportioning control system for earth-working machines

G - Physics

05

D

341/98

G05D 3/00 (2006.01) E02F 3/84 (2006.01) G05D 3/16 (2006.01)

Patent

CA 1101105

ABSTRACT A time-proportioning control system is disclosed for controlling an on-off solenoid valve of an earth-working machine, the system having a sensor responsive to an external reference for producing an error signal, an amplifier switch for switching on and off the on-off solenoid valve in response to the error signal and a capacitive feedback circuit connected from the output to the input of the amplifier switch for controlling the on and off times of the solenoid valve dependent upon the magnitude of the error signal.

304086

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