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. 06, 2005
Filed:
Sep. 30, 2004
Edson Leocadio Ferreira, Peterborough, CA;
Edson Leocadio Ferreira, Peterborough, CA;
Siemens Milltronics Process Instruments Inc., Ontario, CA;
Abstract
A power decoupling circuit for a time-of-flight ranging or level measurement system coupled to a current loop. The level measurement system receives power from the current loop and includes a loop current regulator. The loop current regulator is responsive to signals from a controller for regulating the current in the loop to transmit level measurement data and other information. Power is also taken from the current loop to energize a transducer for generating pulses for performing level measurements. The power decoupling circuit comprises a feedback circuit and a step-up converter. The step-up converter provides charging current to an energy storage device for the transducer and may also generate a voltage gain. The feedback circuit controls the voltage drop across the loop current regulator to minimize losses on it and maximize power available for measurement.