Installation circuits for monitoring a rotational speed

@inproceedings{Moosmann1982InstallationCF,
  title={Installation circuits for monitoring a rotational speed},
  author={Helmut Ing Grad Moosmann and Rolf Muller},
  year={1982}
}
SIGNALING SYSTEM FOR SPEED DIFFERENCES. INSTALLATION MARKED BY DETECTION SYSTEM 14 PROVIDING MORE SIGNALS WITH FREQUENCY-DEPENDENT ESTATE OF THE ROTATION SPEED, CONVERTER SIGNAL 16 17 DELIVERING SIGNAL RANGE WHICH IS BASED ON THE FREQUENCY, AND MEANS OF OPERATIONS A MEMBER TO VALUE THRESHOLD 142 LOAD BY SIGNAL, AND THAT MEETS IN EXCESS DOWN OR UP FOR ROTATION SPEED MINIMUM AND MAXIMUM PREDETERMINED. APPLICABLE INSTALLATION FAN ESPECIALLY FOR COOLING OF A COMPUTER. 

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