Precise phase start-up voltage controlled oscillator with accura

Oscillators – Solid state active element oscillator – Transistors

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Details

331111, 331143, H03K 302

Patent

active

047163836

ABSTRACT:
A voltage controlled oscillator includes an inverting amplifier connected to a resonant feedback network and a comparator for comparing the input to the inverting amplifier to a reference voltage which is equal to the threshold voltage of the inverting amplifier. As a result, the oscillator provides a square wave output having a precise one-to-one duty cycle. In addition, circuitry is included for causing the oscillator to start up at a steady state value and predetermined phase.

REFERENCES:
patent: 4479097 (1984-10-01), Larson et al.

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