Period proportional two-phase voltage controlled oscillator

Details Period proportional two-phase voltage controlled oscillator Period proportional two-phase voltage controlled oscillator

1981-06-19

1983-08-23

Grimm, Siegfried H.

Oscillators

Polyphase output

331 74, 331111, 331177R, 331DIG3, H03K 328

Patent

active

044006683

ABSTRACT:
A two-phase, period-proportional voltage-controlled oscillator circuit is provided for clocking an analog delay line which can be used, for example, in an electronic musical instrument. The voltage-controlled oscillator circuit provides two clock output signals of opposite phase and having a period directly proportional to the control voltage, i.e., the frequency of the two clock signals is inversely proportional to the control voltage. Since the delay provided by the analog delay line is directly proportional to the period of the clock signals, the delay is directly proportional to the control voltage thereby eliminating a source of distortion in a delay modulation system.

REFERENCES:
patent: 3395362 (1968-07-01), Sutherland
patent: 3512106 (1970-05-01), Rosenthal

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