Electrical computers: arithmetic processing and calculating – Electrical analog calculating computer – Particular function performed
Reexamination Certificate
2008-01-08
2008-01-08
Mai, Tan V. (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical analog calculating computer
Particular function performed
Reexamination Certificate
active
07318081
ABSTRACT:
A band-pass filter includes two operational amplifiers. The gm values of the operational amplifiers are each determined by a current flowing through a corresponding transistor for inducing flow of the drive current. The current flowing through the transistor is adjusted by zapping.
REFERENCES:
patent: 3986127 (1976-10-01), Ray
patent: 4884036 (1989-11-01), Koyama et al.
patent: 2004/0229582 (2004-11-01), Miyasita et al.
Hogan & Hartson LLP
Mai Tan V.
Sanyo Electric Co,. Ltd.
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