Patent · US Active

Circuit arrangement for the protection of at least one component of a two wire electrical current loop

US9685942B2 · kind B2 · utility

0Cited by

6References

10Claims

0Family size

Assignee

ENDRESS+HAUSER GMBH+CO.KG · DE

Inventors

Bernd Strütt · Steinen, DE
Jurgen Meier · Leverkusen, DE
Christoph Schleith · Schopfheim, DE

Key dates

Filing date	Jun 2, 2014
Grant date	Jun 20, 2017
Priority date	—
Expiry date	Jun 2, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH03K17/74
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A circuit arrangement for the protection of at least one component of a two wire electrical current loop, which is connected in series with a burden to an AC/DC electrical current source. The two wire electrical current loop has a rectifier a clock signal producer and a switch. The rectifier forms a DC circuit, wherein the component is connected in the DC circuit and wherein the clock signal producer outputs a clock signal to the switch for clocking the DC circuit. The circuit arrangement has a diode, wherein the conduction direction of the diode points from the anode of the diode to the cathode of the diode. The cathode of the diode is connected to the DC circuit, and the anode of the diode is supplied with a periodic or constant voltage from a first voltage source, and the voltage is at least periodically greater than a predetermined threshold value.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.