Prime-mover dynamo plants – Plural prime mover – Plural prime movers with fluid interconnection
Patent
1982-04-08
1985-06-04
Miska, Vit W.
Prime-mover dynamo plants
Plural prime mover
Plural prime movers with fluid interconnection
307 86, 361 52, H02H 346
Patent
active
045216924
ABSTRACT:
This invention relates to device for detecting a threshold value of the frequency of an input signal. A gate signal is generated from the input signal, whose period has a relationship to the frequency of the input signal. A counter counts pulses from an oscillator having a predetermined rate. The gate signal enables the counter for a predetermined period of time and samples the count at the end of the period of time to determine whether the threshold value has been attained, the count stored in the counter being indicative of the frequency of the input signal.
REFERENCES:
patent: 3315148 (1967-04-01), Grillo
patent: 3990007 (1976-11-01), Hohhof
patent: 3993984 (1976-11-01), Penrod
Genuit Luther L.
Nowell John R.
Honeywell Information Systems Inc.
Marhoefer L. J.
Miska Vit W.
Sapelli A. A.
Solakian J. S.
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