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. 23, 1998
Filed:
Nov. 13, 1996
Applicant:
Inventors:
Frank J Kolanko, Greenville, RI (US);
Donald R Laybourn, Novi, MI (US);
Assignee:
Cherry Semiconductor Corporation, East Greenwich, RI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ;
U.S. Cl.
CPC ...
331111 ; 331143 ; 331179 ;
Abstract
A programmable oscillator comprising a switching circuit, a first driver circuit, and a second driver circuit, the oscillator being programmable to switch at a first switching frequency or a second switching frequency by utilizing only one external capacitor and two external resistors. Only one driver circuit is active at a time to charge and discharge the capacitor at one of the switching frequencies. The driver circuits are made active or inactive by a control circuit.