ANDREW JAY MRIZEK
Pilots at Northampton Dr, San Jose, CA
License number
California A4267806
Issued Date
Mar 2017
Expiration Date
Mar 2019
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
2170 Northampton Dr, San Jose, CA 95124
Professional information
Current Source Methods And Apparatus For Light Emitting Diodes
US Patent:
2002014, Oct 3, 2002
Filed:
Mar 30, 2001
Appl. No.:
09/822620
Inventors:
Karl Volk - Scotts Valley CA, US
Andrew Mrizek - San Jose CA, US
Gary Hurtz - Pleasanton CA, US
Andrew Mrizek - San Jose CA, US
Gary Hurtz - Pleasanton CA, US
International Classification:
H01K001/62
US Classification:
315/291000
Abstract:
Current source methods and apparatus for light emitting diodes providing constant diode current and illumination in the presence of voltage and process variations. The method comprises providing a predetermined current through a first transistor, and mirroring the current through the first transistor to at least one additional transistor while holding the voltage across the first transistor to a predetermined value, wherein each additional transistor is coupled in series with a light emitting diode. An exemplary circuit, as well as various illustrative applications are disclosed.