FT series ntshiab sine yoj hnub ci zog inverter
Feem ntau, AC voltmeter amplifies lub teeb liab me me ua ntej, thiab tom qab ntawd ntsuas nws raws li theem nkag los txo qis qhov cuam tshuam ntawm cov ntsuas ntsuas ntawm lub voj voog hauv kev sim. Nyob rau tib lub sijhawm, ib lub voj voog uas muaj kev tawm tswv yim siab impedance yog siv los ua theem kev nkag siab kom txo qis qhov cuam tshuam ntawm cov ntsuas ntsuas ntawm Circuit Court hauv kev sim. AC voltmeter tuaj yeem muab faib ua amplification-nrhiav hom, nrhiav-amplification hom thiab heterodyne hom raws li cov qauv sib txawv ntawm lub voj voog. Feem ntau siv AC voltmeter belongs rau amplification-nrhiav hom hluav taws xob voltmeter. Nws yog tsim los ntawm attenuator, AC voltage amplifier, ntes thiab rectifier fais fab mov. Qhov voltage yuav tsum tau ntsuas yog thawj zaug attenuated los ntawm attenuator mus rau tus nqi tsim nyog rau cov tswv yim ntawm AC amplifier, ces amplified los ntawm AC voltage amplifier, thiab thaum kawg kuaj los ntawm lub detector los ua DC ntws los ntawm lub magnetoelectric meter, thiab lub taub hau meter. qhia qhov loj ntawm qhov ntsuas voltage. Lub kaum sab xis ntawm lub pointer ntawm hluav taws xob voltmeter yog proportional rau qhov nruab nrab tus nqi ntawm qhov ntsuas voltage, tab sis lub vaj huam sib luag yog scaled raws li tus nqi RMS ntawm sinusoidal AC voltage, yog li cov hluav taws xob voltmeter tsuas yog siv los ntsuas tus nqi RMS. ntawm sinusoidal AC voltage. Thaum ntsuas tsis-sinusoidal AC voltage, kev nyeem ntawv ntawm hluav taws xob voltmeter tsis muaj lub ntsiab lus ncaj qha. Tsuas yog los ntawm kev faib cov kev nyeem los ntawm 1.11 (daim ntawv ntawm sinusoidal AC voltage) tuaj yeem tau txais tus nqi nruab nrab ntawm qhov ntsuas voltage.
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