FIELD: measuring equipment, in particular, means for measurement of input impedances of low-frequency and high-frequency electric circuits.
SUBSTANCE: the device for measurement of input impedances of electric circuit has two input terminals for connection of the circuit impendence to be measured, standard resistor, AC voltage amplifier, the first and second keyed synchronous detectors, electric-controlled double-channel switch, power source, additional resistor, the first and second low-pass filters, alphanumeric indicator, manual control console, modulo 4 pulse counter, pulse adder, as well as an impulse generator of the test signal in the form of series-connected microcontroller and frequency synthesizer.
EFFECT: expanded band of operating frequencies, in which the measurement of input impedances of electric circuits is performed, and enhanced precision of measurement of input impedances of electric circuits.
3 dwg
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