Amplifier with feedback

Details Amplifier with feedback Amplifier with feedback

2011-07-26

2011-07-26

Choe, Henry K (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including combined diverse-type semiconductor device

C330S277000

Reexamination Certificate

active

07986189

ABSTRACT:
A circuit includes a first resistive element coupled to a diode, a second resistive element, a first transistor having a first current electrode coupled the second resistive element, a second transistor having a first current electrode coupled to the first resistive element and a second current electrode coupled to the control electrode of the first transistor, a third resistive element coupled to a node, a third transistor having a first current electrode coupled to the node and having a control electrode and a second current electrode each coupled to the control electrode of the second transistor, a fourth transistor having a first current electrode coupled to the second resistive element and a control electrode coupled to the control electrode of the second transistor, and a fifth transistor having a first current electrode coupled to the node and a control electrode coupled to the second current electrode of the fourth transistor.

REFERENCES:
patent: 4596958 (1986-06-01), Graeme et al.
patent: 5077489 (1991-12-01), Gola et al.
patent: 5172340 (1992-12-01), Leforestier et al.
patent: 5216386 (1993-06-01), Wyatt
patent: 5630228 (1997-05-01), Mittel
patent: 6639473 (2003-10-01), Kobayashi
patent: 6765438 (2004-07-01), Brosh et al.

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