Electrical oscillators having automatic tuning arrangements
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United States of America Patent
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-
Dec 16, 1986
Grant Date -
N/A
app pub date -
Mar 21, 1985
filing date -
Mar 21, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electrical oscillator for supplying a reactive load circuit, which comprises an automatic tuning arrangement for varying the output frequency of the oscillator in dependence upon changes in the resonant frequency of the load, in which load current frequency or phase sensing means is coupled to the load circuit and provides an electrical signal which is fed in combination with other signals dependent upon the oscillator output frequency to gating means which produces a pulse output of a particular polarity according to whether the oscillator output frequency is too high or too low and in which the output from the gating means is utilized in controlling the oscillator to increase or reduce its output frequency.
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