IN2012DE00637AIN637DE2012AIN2012DE00637AIN 2012DE00637 AIN2012DE00637 AIN 2012DE00637AIN 637DE2012 AIN637DE2012 AIN 637DE2012AIN 2012DE00637 AIN2012DE00637 AIN 2012DE00637A
Authority
IN
India
Prior art keywords
electronic circuit
period
frequency
pulse
during
Prior art date
Application number
Inventor
Venkata Rao Basam
Uppada Aswani
Trimurthulu Peravali
Das Amitava
Venkata Ranga Rajan Srinivasa
Original Assignee
Director General Defence Res & Dev Org
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Publication date
Application filed by Director General Defence Res & Dev OrgfiledCriticalDirector General Defence Res & Dev Org
Priority to IN637DE2012priorityCriticalpatent/IN2012DE00637A/en
Publication of IN2012DE00637ApublicationCriticalpatent/IN2012DE00637A/en
The invention relates to an electronic circuit for speed measurement of electric motors. The electronic circuit logic to measure duration of each of the input voltage pulses during the 'HIGH' time of the pulse period and calculate a frequency of the pulse voltage during 'LOW time of the pulse period. The electronic circuit logic to reset (discharge) the charged capacitors at appropriate time during the process of frequency to voltage conversion in each period of the pulse waveform, the electronic circuit logic to 'HOLD' the calculated frequency value by appropriate Sample & Hold circuit (S/H) logic. The invention may be used in many applications specifically requiring frequency to voltage conversion during each period of the input pulse waveform.