Amplifiers – With plural diverse-type amplifying devices
Reexamination Certificate
2007-02-23
2008-08-05
Choe, Henry K (Department: 2817)
Amplifiers
With plural diverse-type amplifying devices
C330S049000
Reexamination Certificate
active
07408401
ABSTRACT:
A system is provided for a solid-state implementation of a vacuum tube replacement device. The system may derive power from a target amplifier filament supply. The system may include active or passive functions for noise reduction, voltage isolation, servo biasing, and other functions. The vacuum tube replacement device is pin-for-pin compatible with standard vacuum tube circuit pin configurations. The vacuum tube replacement device system architecture is equally useful for non-vacuum tube systems such as audio amplifier circuits.
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Choe Henry K
Hertzberg Brett
Merchant & Gould P,C,
Roberts Retrovalve, Inc.
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