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:
Feb. 27, 1990
Filed:
Feb. 13, 1989
Silvano Gornati, Casorezzo, IT;
SGS-Thomson Microelectronics S.r.l., Agrate Brianza, IT;
Abstract
This high-precision oscillator stage, with reduced response times, includes only NPN transistors on the signal path and comprises a threshold detector circuit connected to a first and to a second threshold voltage and to the output of the stage so as to generate a differential voltage output signal which switches when each voltage threshold is reached, a control and memory circuit comprising a differential voltage detector connected to the output of the threshold detector and generating a charge and discharge signal depending on the state of the circuit, a memory element controlled by the differential voltage detector to maintain the charge and discharge states and an output driving circuit connected to the control and memory circuit so as to supply an external capacitor with constant currents so as to alternately and periodically charge and discharge the capacitor.