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:
Apr. 21, 1987
Filed:
Apr. 08, 1985
Applicant:
Inventors:
James A Miller, Sr, Austin, TX (US);
Robert N Allgood, Austin, TX (US);
Richard W Ulmer, Austin, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
307350 ; 307354 ; 307362 ; 3072 / ;
Abstract
A voltage detecting circuit is provided for generating an output signal when an input signal exceeds the power supply voltage by a predetermined amount. A reference current is established by an output stage using a first current mirror. A second current mirror is connected to the output stage and detects the input voltage level by forcing a greater or lesser amount of current through the output stage to provide a high or low level output voltage.