FIELD: measuring equipment.
SUBSTANCE: electric current measuring device comprises a measuring circuit connected to the heater input and a thermocouple, as well as an amplifier, a microwave generator with varactor tuning, a DC power supply and a frequency meter. The output of the heater is connected to the thermocouple input, the thermocouple output is connected to the varactor of the microwave generator with varactor frequency tuning, the DC power supply is connected to the input of the microwave generator with varactor frequency tuning, the output of the thermocouple is connected to the input of the frequency counter.
EFFECT: increasing the accuracy and sensitivity of measuring electrical current.
1 dwg
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