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:
Dec. 01, 2020
Filed:
Nov. 11, 2019
Endress+hauser Se+co. KG, Maulburg, DE;
Gautham Karnik, Whitestown, IN (US);
Endress+Hauser SE+Co. KG, Maulburg, DE;
Abstract
The disclosure includes a voltage output circuit for use in a process automation field device, the voltage output circuit including an op-amp configured to supply the output voltage. The output circuit's op-amp is connected to the process automation system though a normally open switch. The normally open switch is closed only when the voltage output circuit is properly powered and operating. An improper connection of a power supply to the voltage output circuit will not power the voltage output circuit, and thus the switch remains open and protects the voltage output circuit from power being drawn in from the improper connection. The disclosure includes also a transceiver circuit having similar power draw protection.