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:
Aug. 14, 1990
Filed:
Aug. 24, 1988
Applicant:
Inventor:
Dennis K Briefer, Marlboro, MA (US);
Assignee:
Setra Systems, Inc., Acton, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ; H03L / ;
U.S. Cl.
CPC ...
3311 / ; 331 65 ; 331176 ;
Abstract
An oscillator including a first frequency control network having a series coupled inductance and sensor capacitor, a pair of cascaded capacitors, and an emitter follower amplifier coupled thereto. The emitter follower amplifier drives a current limiter and a feedback path, whereby the current through the emitter follower amplifier is divided between the current limiter and the feedback path in a manner establishing an oscillatory potential in the oscillator, while keeping the transistor of the emitter follower amplifier substantially out of its saturation state.