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:
Nov. 21, 2000
Filed:
Aug. 24, 1998
Applicant:
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H / ;
U.S. Cl.
CPC ...
327288 ; 327264 ;
Abstract
A time delay circuit that produces a constant delay and is independent of supply voltage. The time delay circuit has a current mirror circuit, a voltage shift circuit, an inverter and a capacitor. The inverter will trip at a predetermined voltage level. A capacitor is coupled to the current mirror circuit and to the inverter for generating a portion of the delay time. A voltage shift circuit is coupled to the inverter for approximately mirroring a voltage shift in the current mirror circuit thereby allowing the time delay circuit to be voltage independent.