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:
Nov. 19, 2002
Filed:
Dec. 14, 2000
Horea-Stefan Culca, Lohmar, DE;
Moeller GmbH, Bonn, DE;
Abstract
The invention relates to an input circuit for relatively high-current alternating current-signals to be monitored. Said input circuit is provided with a capacitor (C) at the input side for supplying a relatively high input current on the basis of an AC supply voltage (L ) by the switched off device ( ) to be monitored. At the input side a discharge circuit ( ) is provided in parallel for quickly detecting any changes of state of the device ( ) to be monitored. Said discharge circuit has a small discharge resistance (Rc) vis-à-vis the input resistance (Re). The discharge circuit ( ) is further provided with a switch element (S ) that is blocked when the current supply voltage (L ) and the threshold voltage (Ustyp) to be recognized have the same polarity and that is conductive when they are of different polarity.