Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1973-12-07
1977-08-02
Corbin, John K.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
G01N 2742
Patent
active
040399346
ABSTRACT:
The method of the invention is mainly intended for studying biological objects, and in particular cervical secretion of cows for the purposes of the pregnancy diagnosis. The method comprises the step of passing through the object being tested of such a short-term current pulse that the total amount of electricity passed through the object during the measurement should not exceed 1.35.10.sup.-.sup.3 C, with a permissible error of the measurement being .+-.2.5%. The apparatus comprises a current pulse relaxation generator, measuring electrodes and a capacitor which memorizes the current passed through the object being tested and is coupled to a current indicator.
REFERENCES:
patent: 2468687 (1949-04-01), Schmitt
patent: 2560857 (1951-07-01), Gambetta
patent: 2651751 (1953-09-01), Heath
patent: 3879657 (1973-12-01), Nystuen et al.
Johnson et al., "Bipolar Pulse Technique . . . " Analytical Chemistry vol. 42, No. 3, Mar. 1970, pp. 329-335.
Kotter, F. R., "Instrumentation for . . . " The Review of Scientific Instruments, vol. 28, No. 3, Mar. 1967, pp. 178-181.
Mirny Igor Nikolaevich
Ostashko Fedor Ivanovich
Corbin John K.
Hille Rolf
Nisse J. Harold
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