Amplifiers – With control of power supply or bias voltage
Reexamination Certificate
2006-01-18
2008-08-26
Nguyen, Khanh V (Department: 2817)
Amplifiers
With control of power supply or bias voltage
C330S297000
Reexamination Certificate
active
07417502
ABSTRACT:
The disclosure is directed to power supplies for audio amplifiers that focus on the importance of certain power supply characteristics in forming the overall qualities of a tube amplifier. The power supplies may use a power transformer with two dissimilar and selectable secondary windings to supply the voltages for a single vacuum tube power amplifier (B+ voltages). The power supplies may also apply different rectifier characteristics to complement the use of multiple differing secondary windings. The power supplies may also use different capacitor bank options to filter ripple voltage. The power supplies may also use of coordinated grid-bias voltage adjustment that coincides with secondary winding selection. The power supplies may also use coordinated preamp bias voltage adjustment that coincides with secondary winding selection.
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Nguyen Khanh V
The Patent Source
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