SU1689869A1
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Device for measuring phase shift of harmonic signals
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Device for measuring frequency of sine signals
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Alternating voltage-to-constant voltage converter
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Method of determining rectangular pulse durations within periodic sequence
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Method of control for pulse shaper output voltage measurement
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Indicator of voltage deviations
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Method for comparing amplitudes of two a c voltages
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Method for comparing two sine voltage amplitudes
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Method and device for comparing the amplitude of two harmonic signals of the same frequency
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Device for measuring noise coefficient
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Device for generating pulses from sine signal
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Method for measuring amplitude of sine voltage
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Null detector
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Device for generating pulses from sine signal
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Method and device for obtaining squared root-mean-square value of a.s.voltage
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Device for measuring active power of single-phase alternating current
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Method of measuring harmonic signal phase shift
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Device for providing duplicate facilities for power sources
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Wide-band ac-to-dc voltage converter
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Method of measuring ac voltage actual value
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