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.
Patent No.:
Date of Patent:
Jul. 09, 1996
Filed:
May. 28, 1993
Applicant:
Inventors:
Edoardo Botti, Via Battu 16/D, IT;
Andrea Fassina, Via Ercolano, 3, IT;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 18 ; 361 29 ; 361 54 ; 361 56 ;
Abstract
A turn-on control circuit having a comparator supplied with a turn-on voltage increasing gradually during the turn-on phase of a device for protection. When the control voltage reaches a predetermined value, the comparator supplies a diagnostic enabling signal to a diagnostic stage, which, in the event an undesired condition is detected at an output of the device, supplies a clamp enabling signal to the control terminal of a clamping transistor located between the input of the circuit and ground, and which, when enabled, prevents the turn-on voltage from increasing further, and so prevents the device from being turned on.