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:
May. 20, 2025
Filed:
Nov. 12, 2020
Phoenix Contact Gmbh & Co. KG, Blomberg, DE;
PHOENIX CONTACT GMBH & CO. KG, Blomberg, DE;
Abstract
A contact monitoring device for monitoring an electrical contact having a first contact state and a second contact state includes: an oscillator circuit for generating an excitation signal; a coupler including a signal input and a signal output, the oscillator circuit being connected upstream of the signal input in order to apply the excitation signal to the coupler, the coupler converting the excitation signal into a contact monitoring signal and outputting the contact monitoring signal at the signal output in order to act on the electrical contact; and a detector for detecting a version of the excitation signal in order to monitor the electrical contact. A first impedance value is set with the electrical contact in the first contact state on the oscillator circuit, and a second impedance value is set with the electrical contact in the second contact state on the oscillator circuit.