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:
Dec. 21, 1999
Filed:
Dec. 31, 1997
Richard P Oberlin, Phoenix, MD (US);
AAI Corporation, Cockeysville, MD (US);
Abstract
An ultra-low power, fast start fuze oscillator contained in a fast moving projectile which contains a programmable projectile fuze. It is an RC oscillator which uses a low power comparator, three biasing resistors, a timing resistor and a timing capacitor to produce an output frequency as low as 8 kHz with a frequency error of less than .+-.0.1% over a -40.degree. C. to +60.degree. C. temperature range. At the same time, it is capable of surviving a high g environment (30,000 g to 60,000 g) in a reliable manner. Furthermore, the oscillator draws a very low amount of power, using a maximum of about 20 uA of current and has a start-up time limited to a maximum of 1.5 msec. An additional circuit can be connected to the positive supply voltage input of a lower current version of an RC oscillator to jump start the RC oscillator, thereby improving start-up time to 1.5 msec while reducing the current drain to 15 uA.