Yuav ua li cas ntsuas tam sim no thiab voltage nrog oscilloscope
Rau kev ntsuas ntawm DC tam sim no lossis AC tam sim no, feem ntau yog ua los ntawm txoj kev tsis ncaj. Txoj kev tshwj xeeb yog:
1, ua ntej ntawm tag nrho cov, tam sim no ntws yuav hloov mus rau hauv proportional voltage.
2, thiab tom qab ntawd soj ntsuam nrog oscilloscope, txoj kev sim dav dav yog:
Nyob rau hauv lub Circuit Court nyob rau hauv kev sim nyob rau hauv series nrog ib tug high-precision, me me kuj tus nqi ntawm cov uas tsis yog-inductive resistor, thiab ces siv ib tug oscilloscope los ntsuas qhov voltage txoj kev, ntsuas rms tus nqi ntawm qhov voltage hla lub resistor, thiab ces xam tus nqi. ntawm qhov ntsuas tam sim no, cov qauv kev suav yog
I=U/R
Qhov twg kuv ntsuas tus nqi tam sim no, A;
U-tus nqi ntawm qhov hluav taws xob hla lub resistor, V.
R - qhov tsis kam ntawm cov tsis-inductive tsis kam, Ω.
Oscilloscope ntsuas ntawm DC voltage
Nyeem qhov kev ncua deb y ntawm kab rov tav qaim thiab xoom voltage kab ntawm lub fluorescent screen nyob rau lub sij hawm no, muab y los ntawm ntsug rhiab heev ntawm oscilloscope Sy kom tau qhov luaj li cas ntawm qhov ntsuas voltage ux, piv txwv li, ux{{0} }Sy × y.
Kev ntsuas ntawm DC voltage nrog AC tivthaiv
1, vim lub magneto-hluav taws xob lub taub hau ntawm deflection system ntawm qhov tam sim no muaj qhov nruab nrab qhov cuam tshuam, tsis tuaj yeem cuam tshuam cov ntshiab AC kom muaj nuj nqis, yog li DC voltage uas muaj AC cov khoom ntawm ib qho kev ntsuas kev ntsuas yog siv cov analogue voltmeter DC cov ntaub ntawv ntsuas. .
2, Yog hais tias lub AC tivthaiv superimposed nyob rau hauv lub DC voltage muaj periodicity thiab amplitude symmetry, lub DC voltage yuav raug ntsuas ncaj qha nrog ib tug analogue voltmeter.
3, los ntawm kev hloov pauv ntawm AC teeb liab thiab DC, xws li kev hloov kho thiab kev lim dej ntawm DC qhov nruab nrab, nrog rau qhov tsis yooj yim sib haum xeeb ntawm qhov nruab nrab DC tivthaiv tuaj yeem ntsuas nrog ib qho analog voltmeter.
4, tsis tuaj yeem siv digital multimeter los ntsuas DC voltage uas muaj AC cov khoom, vim tias cov DC voltmeter yuav tsum ntsuas DC voltage stability, thiaj li yuav tso saib tus lej, txwv tsis pub tus lej yuav dhia tsis nres.
