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. 17, 1983
Filed:
Oct. 09, 1980
Bernd Schelling, Stuttgart, DE;
Ulrich Flaig, Markgroningen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
Repeated trigger pulses cause a comparator to put a transistor into its conducting condition, producing a rise in emitter-collector current dependent upon the inductance of a variable inductor. A voltage corresponding to this current is developed across a resistor in circuit with the inductor and is applied to the noninverting input of the comparator and when it reaches a threshold value, the comparitor switches and turns off a transistor, after which the reaction current in the inductor is dissipated through one or more resistors. The comparator output produces a step wave having a duty cycle proportional to the inductance value, a signal which is particularly useful when the inductor is a transducer producing an inductance that varies proportionately to a physical dimension or a pressure, particularly when these are operation parameters of an internal combustion engine.