Electricity: measuring and testing – Testing potential in specific environment – Voltage probe
Patent
1979-02-23
1981-06-09
Moore, David K.
Electricity: measuring and testing
Testing potential in specific environment
Voltage probe
324 79R, G01R 3102
Patent
active
042727197
ABSTRACT:
An input signal from an antenna is level-adjusted by a first level adjuster and then frequency-converted by a frequency converter. The frequency-converted signal is further level-adjusted by a second level adjuster and then detected by a detector, and the detected output is displayed on a first display. A control signal for controlling the frequency of a local oscillation signal of a local oscillator, which is applied to the frequency converter, is adjusted to select the input signal to be measured. The control signal is applied to a compensating signal generator to derive therefrom a compensating signal for compensating for the frequency characteristic of the antenna. The compensating signal, a first set signal representing the set value of the first level adjuster, and a second set signal representing the set value of the second level adjuster are added together. The added output is applied to a second display to indicate the antenna input value provided at the time when the first display indicates a reference level of the first display, thus measuring the electric field intensity of the input electric wave.
REFERENCES:
patent: 3761803 (1973-09-01), Slough
patent: 3879661 (1975-04-01), Collins
Niki Shoji
Yoshino Yuji
Moore David K.
Takeda Riken Kogyo Kabushikikaisha
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