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:
Jul. 12, 2005
Filed:
Nov. 27, 2002
James R. Kuo, Cupertino, CA (US);
Seungli Kim, San Francisco, CA (US);
James R. Kuo, Cupertino, CA (US);
SeungLi Kim, San Francisco, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
An oscillator has timing characteristics that are determined by resistor and capacitor values. The circuit comprises an astable multivibrator and a current reference. The multivibrator comprises a first and a second timing capacitor. The multivibrator is configured to produce an oscillating output signal in response to charging and discharging the first and the second timing capacitors. The current reference is configured to control the rate of change of charge of the first and second timing capacitors. The current reference is determined in part by the resistor values.