Constant current source

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United States of America Patent

PATENT NO 5488328
SERIAL NO

08326497

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Abstract

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A constant-current source that contains two substantial identical field effect transistors as well as a simple resistance network. The actual saturation current of one of the field effect transistors is measured and converted by the resistance network into a control voltage for the other field effect transistor which produces the desired constant current. With such a circuit, production tolerances, especially tolerances for field effect transistor, as well as operation-dependent temperature variations can be compensated for within a wide range.

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Patent Owner(s)

Patent OwnerAddress
DEUTSCHE AEROSPACE AGPATENTABTEILUNG ROBERT-KOCH-STRASSE D-8012 OTTOBRUNN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Feldle, Heinz-Peter Senden, DE 6 62
Ludwig, Michael Ulm, DE 55 230
Reber, Rolf Ulm, DE 6 39

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Patent Citation Ranking

  • 11 Citation Count
  • H01L Class
  • 42.86 % this patent is cited more than
  • 29 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges737723911661421614944701 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +0255075100125150175200225250275300325350375400

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