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. 14, 1981
Filed:
Nov. 21, 1979
Applicant:
Inventors:
Robert D Lee, Austin, TX (US);
Richard W Ulmer, Austin, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323311 ;
Abstract
A single chip MOS regulated negative power supply is comprised of first, second and third strings of field effect transistors and first and second amplifiers. The first string in conjunction with the zener diode develops a reference voltage which then passes through a voltage to current converter comprised of a first amplifier, the second string and an output transistor. The current thus produced passes through a third string of field effect transistors which is referenced to ground. The second amplifier provides negative feedback to the third string to produce the regulated output.