Yuav ua li cas kuaj DC fais fab mov ripple yam nrog oscilloscope
Kuv tsim ib qho analogue Circuit Court siv multisim software thiab simulated ntsuas siv virtual oscilloscope.
Koj tuaj yeem xa mus rau daim vis dis aus los ntsuas qhov ripple ntawm DC fais fab mov.
Cov kauj ruam tshwj xeeb yog raws li nram no:
Qhib Multisim simulation software, siv op-amp LM324 los tsim qhov sib ntxiv circuit, superimpose 5V voltage nrog 50Hz me teeb liab los simulate ripple
Ntxiv cov resistors, capacitors, fais fab mov thiab lwm yam simulation li, thiab raws li cov adder Circuit Court thaiv
Ib qho ntawm cov capacitor C1 plays lub luag haujlwm ntawm kev thaiv DC thiab AC, siv 5V DC tsis deflated, thiab ua raws cov zis ncaj qha ntawm cov zis.
Rau AC teeb liab, nws yog los ntawm op-amp scaling tom qab tso zis, high-frequency teeb liab scaling piv ntawm R2 / R1, uas yog, cov zis amplitude yog txo mus rau 0.1.
Resistors C1 thiab R1 tsim lub high-pass lim circuit, kom cov input voltage 5V nyob rau hauv-theem kawg yog cais, thaum lub AC 50Hz teeb liab dhau los.
The -6dB cutoff frequency of this high-pass filter circuit is 1/(2πR1C1) = 16Hz, and 50Hz >>16Hz, yog li qhov impedance tuaj yeem suav tias yog 0.
5V DC fais fab mov txuas nrog rau theem kawg ntawm op-amp, thiab AC teeb liab nrog RMS tus nqi ntawm 100mV thiab zaus ntawm 50Hz yog input mus rau qhov kawg inverted, Vs.
Raws li theoretical tsom xam, qhov voltage ntawm qhov tso zis ntawm op-amp yog 5-0.1 * Vs (V).
Luag nyob rau hauv lub protagonist ntawm no video - lub virtual oscilloscope, thiab xaiv ob-channel oscilloscope nyob rau hauv txoj cai toolbar.
Txuas ob txoj kev ntawm oscilloscope rau cov zis ntawm op-amp tib lub sijhawm, channel A yog siv los soj ntsuam qhov DC voltage, channel B yog siv los soj ntsuam AC ripple. Txhawm rau ua kom yooj yim rau kev soj ntsuam, cov xim ntawm cov channel A kev sib txuas yog hloov mus rau lub teeb liab, thiab cov channel B kev twb kev txuas tau hloov mus rau lub teeb ntsuab, thiab cov xim ntawm cov yoj waveforms yuav raug hloov raws li.
Nias lub pob "Khiav" ntawm lub ces kaum sab xis kom khiav lub voj voog, thiab nyem ob npaug rau "Oscilloscope" icon qhib "Oscilloscope Display Window".
Ntawm lub qhov rais oscilloscope tso saib, kho qhov zoom theem ntawm channel B. Qhov tseem ceeb tshaj plaws yog nyem rau ntawm AC coupling / DC coupling nyob rau hauv lub cross-wave coupling los ntawm "AC coupling" muaj nuj nqi, uas tsuas yog qhia AC teeb liab, kho qhov zoom theem ntawm channel B 5mV / Div, piv txwv li, 5mV txhua 5mV. Tom qab cais tawm DC 5V teeb liab los ntawm "AC coupling" thiab kho qhov zoom qib mus rau 5mV / div, peb tuaj yeem pom meej qhov ripple.
Txav mus rau ob tus cursor txoj haujlwm ntawm "Oscilloscope" los ntsuas qhov voltage ntawm channel A thiab channel B;
Txav tus cursor 1 mus rau qhov chaw siab tshaj ntawm channel B, thiab txav tus cursor 2 mus rau txoj hauj lwm ntawm channel B.
Los ntawm cov nqi ntsuas los ntawm tus cursors, qhov ntsuas DC voltage rau channel A yog kwv yees li 5V, thaum lub ncov-rau-peak tus nqi rau channel B yog 26.897mV.
