Electronically tuned electro-acoustic power oscillator

Details Electronically tuned electro-acoustic power oscillator Electronically tuned electro-acoustic power oscillator

1988-12-02

1990-12-11

Grimm, Siegfried H.

Oscillators

Combined with particular output coupling network

331 78, 331117R, 331167, 331179, H03B 512, H03J 522, H04B 1100

Patent

active

049773801

ABSTRACT:
The electronically tuned power oscillator (ETPO) of the present invention provides a method and apparatus that drives a narrow-band (high Q) transducer over a relatively broad band of frequencies. A pseudo-random sequence generator dynamically switches a bank of capacitors varying the resonant frequency of the power oscillator. A node on the power oscillator provides the clock for the pseudo-random sequence generator thereby providing a synchronized frequency change on every time varying cycle.

REFERENCES:
patent: 3100886 (1963-08-01), Marks
patent: 3721949 (1973-03-01), Hubbard et al.
patent: 3988701 (1976-10-01), Funston
patent: 4306301 (1981-12-01), Geren et al.

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