Circuit having audio output pulse rate related to measured resis

Details Circuit having audio output pulse rate related to measured resis Circuit having audio output pulse rate related to measured resis

1974-04-15

1976-02-03

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 30B, 324 61R, 324 65R, G01R 2700

Patent

active

039367355

ABSTRACT:
System for monitoring the resistance and capacitance between sense electrodes in a volume of material and providing audio pulses having a frequency which is a function of the resistance between the probes and pulse modulation which is a function of the capacitance between the probes.

REFERENCES:
patent: 2461111 (1949-02-01), Flinspach et al.
patent: 2611643 (1952-09-01), Higgins
patent: 2763935 (1956-09-01), Whaley et al.
patent: 2918054 (1959-12-01), Goolkasian
patent: 3284707 (1966-11-01), Clinton
patent: 3689832 (1972-09-01), Leto
patent: 3758855 (1973-09-01), Meyer

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