H - Electricity – 03 – F
Patent
H - Electricity
03
F
323/4
H03F 1/34 (2006.01) G05F 3/26 (2006.01) H03F 3/343 (2006.01) H03F 3/45 (2006.01)
Patent
CA 1220519
SO1936 ABSTRACT OF THE DISCLOSURE A current mirror circuit is formed of input and output transistors of the same polarity having emitters commonly connected to a reference potential and bases connected in common, the collector of the input transistor is connected to ground through a constant current source which initially establishes the input current, a differential amplifier compares the collector current of the input transistor to a desired input current as determined by a bias voltage applied to one input of the differential amplifier and provides negative feeback to maintain the desired input current, thereby to maintain a desired output-to-input current ratio.
454799
Gowling Lafleur Henderson Llp
Sony Corporation
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