Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1981-11-18
1983-07-19
Krawczewicz, Stanley T.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 81, 324149, 331 64, G01R 2700
Patent
active
043946178
ABSTRACT:
The present invention relates to the design and fabrication of a probe, ancillary signal conditioning circuits with display circuits and related equipment required to measure the resonate frequency and display the shape of the resonance curve. The probe uses the energy absorbing method of indicating these parameters. A graphical display or an analog meter dip indicates the resonant frequency. A digital frequency meter can measures the frequency points precisely.
REFERENCES:
patent: 2721908 (1955-10-01), Moe
patent: 2736807 (1956-02-01), Porter
patent: 3283242 (1966-11-01), Oliver
Queen, Transistorizing the Dip Meter, Radio-Electronics, May 1956, pp. 34, 35.
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