The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jan. 19, 1999

Filed:

Nov. 25, 1996
Applicant:
Inventor:

Samuel A Johnson, Eagle, ID (US);

Assignee:

Beacon Light Products, Inc., Meridian, ID (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
315291 ; 315307 ; 315360 ; 315362 ; 315D / ; 315D / ;
Abstract

A switching module having a switching circuit which achieves a relatively smooth turn-on conduction transition characteristic and a relatively low power consumption. A controlled transition circuit conducts current to between two of its three terminals when in a fully conductive state. The transition circuit transitions from a non-conductive state to the fully conductive state over a predetermined amount of time to limit the di/dt and the interference signals generated by the di/dt. A low forward voltage conduction circuit also conducts current to the load in a conductive state and diverts current to the transition circuit when in a non-conductive state. The conduction circuit creates a second predetermined voltage across the terminals when in the conductive state which is substantially less than the first predetermined voltage to reduce the power consumption.


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