Multi-frequency oscillator circuit

Details Multi-frequency oscillator circuit Multi-frequency oscillator circuit

1975-07-25

1977-04-12

Kunin, Stephen G.

Oscillators

With frequency adjusting means

Step-frequency change

331177R, H03B 524

Patent

active

040178099

ABSTRACT:
A circuit for generating a first or a second A-C signal in response to a st and second switch. An oscillator circuit having two parallel capacitance networks and one resistance network which together determine the time constant for the frequency of oscillation of the first A-C signal is provided. When the first and second switch are "off" the first A-C signal is generated by said oscillator circuit. When the second switch is "on" an inverting amplifier in the oscillator circuit is electrically removed therefrom thereby electrically removing one of the parallel capacitance networks resulting in the oscillator circuit generating to second A-C signal.

REFERENCES:
patent: 3668553 (1972-06-01), Dunn et al.
patent: 3693110 (1972-09-01), Briggs, Jr. et al.
patent: 3924262 (1975-12-01), Melancon

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