Title:
INDUCTIVE LOAD CONTROL CIRCUIT
Document Type and Number:
Japanese Patent JPS6474063
Kind Code:
A
Abstract:
PURPOSE: To reach a leak level quickly by providing means for controlling conduction of current from a power supply to a load by connecting a by-pass branch circuit between a first control switch and a load thereby closing first and second control switches simultaneously. CONSTITUTION: A control circuit for a plurality of inductive loads Li includes a storage inductor L1 connected with an input terminal 1 through an electronic control switch SW1 . The switch SW1 is shown as an interruption switch and provided in parallel with a circulation diode. A control switch SW2 similar to the switch SW1 is also connected between the storage inductor L1 and the ground. A diode R2 is connected with the storage inductor L1 which is also connected with a capacitor C. An electronic controller ECU comprises a microprocessor and an I/O interface circuit and controls respective switches SW1 ,.... A by-pass branch circuit M is connected between the switch SW1 and the branch circuit of the load L1 and a current conduction controller B is connected therewith.
Inventors:
MARUKO KARUFUSU
Application Number:
JP21350888A
Publication Date:
March 20, 1989
Filing Date:
August 24, 1988
Export Citation:
Assignee:
MARELLI AUTRONICA
International Classes:
F02D41/20; H03K17/64; F02B3/06; (IPC1-7): H02M7/48; H03K17/64