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:
Sep. 03, 2013
Filed:
Apr. 19, 2011
Robert Lalla, Lorrach, DE;
Robert Lalla, Lorrach, DE;
Endress + Hauser Flowtec AG, Reinach, CH;
Abstract
A driver circuit having: a voltage controller (UC), which delivers a direct voltage (U) to a controller output; a direct voltage converter (DC/DC), to which is applied on the primary side the direct voltage (U) delivered from the voltage controller, and which converts such into a direct voltage (U') available on the secondary side; and an end stage operated by means of said direct voltage (U′), which converts a control signal (sin) lying on a signal input into a driver signal (i) for the measuring transducer. The direct voltage (U′) available on the secondary side of the direct voltage converter (DC/DC) has, in such case, a magnitude which is always smaller than a magnitude of the direct voltage (U) delivered by the voltage controller, and the driver signal (i) has an electrical power (P), which is higher than an electrical power (P) of the control signal (sin).