Resonant circuit excitation method and apparatus

Details Resonant circuit excitation method and apparatus Resonant circuit excitation method and apparatus

1977-07-01

1979-07-03

Griffin, Robert L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

325 18, 328114, 340572, 343 65SS, H04B 159, H04B 7145

Patent

active

041602099

ABSTRACT:
A method and apparatus using a single-frequency oscillator as a source for resonating, selectively, an infinite number of different higher-frequency resonant circuits. The oscillator signal is clipped, and this clipped signal is processed in an infinitely adjustable amplifier to change the slopes of leading and trailing edges thereof. The amplifier also functions to cause these modified edges to extend over a predetermined signal-level range.

REFERENCES:
patent: 3740742 (1973-06-01), Thompson

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