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. 09, 1986
Filed:
Jun. 13, 1984
Applicant:
Inventor:
Mark W Grimes, Lombard, IL (US);
Assignee:
Rockwell International, Downers Grove, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
H04M / ; H03K / ;
U.S. Cl.
CPC ...
179 / ; 179 / ; 363 97 ; 307261 ;
Abstract
This invention depicts a novel sine wave ring generator for use with a telephone circuit and an input voltage having a predetermined range, the generator comprising a switching power supply for providing a pre-determined DC output voltage from the input voltage range, an oscillator for providing a pseudo-sine wave output with a predetermined frequency, and an amplifier for amplifying the pseudo-sine wave and for receiving the predetermined DC voltage having a low output impedance thereby maintaining regulation of a circuit output voltage in a predetermined range and supplying a circuit output current.