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:
Jun. 20, 1978
Filed:
Apr. 26, 1977
Applicant:
Inventor:
Bortolo Mario Pradal, Pittsburgh, PA (US);
Assignee:
RCA Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H03B / ;
U.S. Cl.
CPC ...
3311 / ; 331158 ;
Abstract
A high signal-to-noise crystal oscillator is provided, including a transistor and a crystal coupled across the input thereof. The oscillator further includes series connected capacitors coupled across the crystal and between the base electrode of the transistor and reference potential with the emitter coupled to the junction of said series connected capacitors. The value of the series connected capacitor is selected to be such that the ratio of the total capacitance between the emitter to ground to the total capacitance between the base and emitter electrodes is on the order of 5.4 to 1 to 3.9 to 1.