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DK168719B1
(da)
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Kredsløb til detektering af asymmetri i magnetiseringsstrømmen i en magnetisk modulator samt anvendelse af dette kredsløb i et målekredsløb
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US3281689A
(en)
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R. m. s. meter circuit using linear resistors and voltage biased diodes to approximate the square law characteristic
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US1869209A
(en)
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Thermionic measuring device
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SE125613C1
(enrdf_load_stackoverflow)
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US3739274A
(en)
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Direct current measuring system
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GB886265A
(en)
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Improvements in or relating to multiplying devices
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US3293497A
(en)
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Ground fault detector
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SU1394153A1
(ru)
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Устройство дл измерени электрических токов
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US1496786A
(en)
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Portable impedance bridge
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US2872643A
(en)
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Electrical measuring instrument
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US1535587A
(en)
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Electrical measuring instrument
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Silsbee
|
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Methods for testing current transformers |
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US2005962A
(en)
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Electromotive forces comparing device
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US3697872A
(en)
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Circuit for measuring the power consumption of three phase loads
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US1557038A
(en)
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Power-factor meter
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US2585001A
(en)
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Apparatus for the measurement of high-frequency power
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GB1254827A
(en)
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Alternating current apparatus for measuring capacitance or comparing voltages
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US3067376A
(en)
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Frequency transducer
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RU96258U1
(ru)
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Амперметр
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US1641757A
(en)
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Combined voltmeter and phase-rotation indicator
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US1654576A
(en)
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Wave-deviation meter |
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US698655A
(en)
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Alternating-current motor-meter.
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SU1615816A1
(ru)
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Измерительный преобразователь синусоидального напр жени
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US714973A
(en)
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Measuring alternating electric currents.
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US2243098A
(en)
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Electrical measuring apparatus
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