Driving circuit for printing electromagnet

Details Driving circuit for printing electromagnet Driving circuit for printing electromagnet

H - Electricity

01

H

318/1

H01H 47/32 (2006.01) B41J 9/44 (2006.01) H01F 7/18 (2006.01) H03K 17/64 (2006.01)

Patent

CA 1037556

ABSTRACT OF THE DISCLOSURE A driving circuit for supplying to the coil of an electromagnet a controlled current derived from an unregulated voltage source comprises a current switch and a current detector which is responsive to current flowing in the coil, and further includes a bistable circuit having a controlled triggering level to close the switch following a switch command and to maintain it in the on state until the current flowing in the coil reaches a pre-established value which is automatically adjusted in dependence on the supply voltage.

242098

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