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:
Oct. 09, 1990
Filed:
Jan. 25, 1989
Gerhard Woss, Graz, AT;
Klaus Leitmeier, Graz, AT;
Abstract
A charge amplifier circuit for balancing drift between periodically occurring measured signals includes a drift-compensating device with a sample/hold unit which is triggered by a trigger device in accordance with the period of the measured signals. The trigger device is connected for supplying trigger pulses, so that the drift at an output of the charge amplifier, determined at the end of a compensation period, can be taken into account by the sample/hold unit to supply a compensating current to an input of the charge amplifier. The triggering of the sample/hold unit can be performed by external or internal triggering arrangements, so that simple measurements can be undertaken without a large outlay of equipment.