Process and circuitry for monitoring a control circuit

US6127830A · kind A · utility

Assignee

• ITT MANUFACTURING ENTERPRISES LLC · US

Inventors

• Mario Engelmann · Rheinböllen, DE
• Michael Zydek · Langgöns, DE
• Olaf Zinke · Hersbruck, DE
• Wolfgang Fey · Niedernhausen, DE

Key dates

• Filing date: Sep 21, 1998
• Grant date: Oct 3, 2000
• Expiry date: Sep 21, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T2270/406
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

In a method of monitoring an output module to which a number of inductive loads are connected and in which the current flowing through these inductive loads is regulated by clocked driving of the output stages, the current created in the blocked phases of the output stages by the inductively stored energy is partially or temporarily conducted across a common current measuring device and evaluated for testing the output stages, including the inductive loads.