Inductive load powering arrangement

Details Inductive load powering arrangement Inductive load powering arrangement

2006-09-19

2006-09-19

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

High tension ignition system

Current or voltage sensing in coil primary

C123S480000, C361S152000

Reexamination Certificate

active

07107976

ABSTRACT:
An inductive load powering arrangement (20) utilizes current monitoring on only one side of the load (22) which in one example is a fuel injector coil. In disclosed examples, a high side driver (28) is on a first side of the coil (22) and the current monitoring occurs on only the first side of the coil (22). The low side driver (30) on an opposite side of the coil (22) is used for chopping to control the level of current in the operating coil (22).

REFERENCES:
patent: 4653447 (1987-03-01), Linder et al.
patent: 5207208 (1993-05-01), Ward
patent: 5835330 (1998-11-01), Kirschner et al.
patent: 6796297 (2004-09-01), Schmied et al.
patent: 2368210 (2002-04-01), None

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