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. 07, 2001
Filed:
Dec. 06, 1999
Josef Halamik, Roznov p.R., CS;
Frantisek Sukup, Rosnov p.R., CS;
Jefferson W. Hall, Phoenix, AZ (US);
Semiconductor Components Industries, LLC., Phoenix, AZ (US);
Abstract
A controller oscillator provides a periodic output signal having first and second output level states. The oscillator is responsive to an applied saw tooth signal that varies between first and second voltages (V,,V,). The oscillator is comprised of a comparator (,) the non-inverting input of which receives the saw tooth signal applied thereto to produce the periodic output signal at its output (,). A first voltage reference circuit (,, and,) generates the second voltage (V,) that is applied to the inverting input of the comparator while the periodic output signal is at the first output level state and the input signal charges from the first voltage (V,) towards the second voltage. As the input signal becomes equal to the second voltage the output of the comparator switches to the second output level state and a second voltage reference (,) provides the first voltage at the inverting input of the comparator.