Oscillators – Solid state active element oscillator – Transistors
Patent
1986-06-23
1987-12-29
Laroche, Eugene R.
Oscillators
Solid state active element oscillator
Transistors
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.
Lofgren Karl M. J.
Ouyang Kenneth W.
Shearer Gerald W.
LaRoche Eugene R.
Pascal Robert J.
Western Digital Corporation
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