Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1976-05-12
1978-01-24
Krawczewicz, Stanley T.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
328148, 328149, 328163, G01R 2700
Patent
active
040706150
ABSTRACT:
A circuit is provided for generating signals proportional to distortion of a square-wave reference signal caused by the impedance mismatch of an attenuator probe and the input impedance of an electronic instrument. The generated signals are utilized to control an indicator device and thereby provide an indication of the mismatch as well as proper compensation of the probe.
REFERENCES:
patent: 2143094 (1939-01-01), Swift
patent: 2680834 (1954-06-01), Burns et al.
patent: 2805392 (1957-09-01), Schnoll
patent: 2870430 (1959-01-01), Hancock
patent: 3419799 (1968-12-01), Papadeas
patent: 3617879 (1971-11-01), Mugnier
patent: 3866130 (1975-02-01), Krause
patent: 3979667 (1976-09-01), Cornes
Krawczewicz Stanley T.
Noe George T.
Tektronix Inc.
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