FIELD: design of A C quick-response digital voltmeters, multimeters, amplitude and frequency demodulators. SUBSTANCE: meter incorporates two comparators, counter, 2AND gate, functional converter, synchronizer, register, two delay elements and one- shot multivibrator. Principle of action of meter lies in formation of rectangular pulses, which duration consists in functional dependence on amplitude and frequency of tested voltage from measured sinusoidal voltage. EFFECT: development of device that can measure simultaneously amplitude and frequency of harmonic process. 4 dwg
