Amplifiers – With amplifier condition indicating or testing means
Patent
1990-06-09
1992-06-09
Mottola, Steven
Amplifiers
With amplifier condition indicating or testing means
116300, 116334, G01R 1900
Patent
active
051210746
ABSTRACT:
The present invention relates to a tuning aid system for manually operated vacuum tube type RF power amplifiers. The tuning sequence is simplified by providing a visual indication of a region where the plate current and grid current of the vacuum tube indicate that the amplifier is properly tuned. In particular, the plate current and grid current of the vacuum tube are monitored and the readings thereof are coordinated by means of a visual display which indicates when the amplifier is properly tuned. In an aspect of the invention, the visual display also includes directions for modifying the level of the plate current and/or grid current on either side of the tuned region.
REFERENCES:
patent: 4332162 (1982-06-01), Garthe
Pagel, Paul K., "Heath SB-1000 HF Linear Amp", QST, Feb. 1988, pp. 33-35.
Diawa Ham Accessories ad, QST, Sep. 1984, p. 97.
Hrivnak Paul
Riach James C.
Mottola Steven
Vectronics Corporation
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