Yuav ua li cas kuaj lub ripple coefficient ntawm DC fais fab mov nrog lub oscilloscope
Qhib Multisim simulation software, siv lub lag luam amplifier LM324 los tsim ib tug adder circuit, superimpose 5V voltage nrog 50Hz me teeb liab, thiab simulate lub ripple
Ntxiv cov khoom siv simulated xws li resistors, capacitors, thiab cov khoom siv hluav taws xob, thiab txuas lawv raws li cov khoom siv hluav taws xob.
Lub capacitor C1 ua lub luag haujlwm ntawm thaiv DC thiab dhau AC. Thaum siv 5V DC, nws yuav tsis raug scaled thiab yuav ncaj qha ua raws li cov zis ntawm cov zis kawg.
Rau AC teeb liab, lawv yog cov zis tom qab ntsuas. Qhov ntsuas qhov sib piv ntawm cov teeb liab ntau zaus yog R2 / R1, uas yog, qhov tso zis tawm tau txo qis rau 0.1.
Resistors C1 thiab R1 tsim ib lub high-pass lim Circuit Court, kom lub 5V input voltage ntawm lub tsis-inverting davhlau ya nyob twg yog cais, thiab AC 50Hz teeb liab dhau.
The -6dB cutoff frequency of this high-pass filter circuit is 1/(2πR1C1)=16Hz, 50Hz>>16Hz, yog li qhov impedance tuaj yeem suav tias yog 0.
Txuas lub 5V DC fais fab mov mus rau qhov tsis-inverting davhlau ya nyob twg ntawm op amp, thiab input AC teeb liab Vs nrog ib tug zoo nqi ntawm 100mV thiab ib zaus ntawm 50Hz ntawm lub inverting davhlau ya nyob twg.
Raws li theoretical tsom xam, qhov voltage ntawm qhov tso zis davhlau ya nyob twg ntawm op amp yog 5-0.1 * Vs (V)
Luag nyob rau hauv lub virtual oscilloscope, tus protagonist ntawm no video, thiab xaiv ob-channel oscilloscope nyob rau hauv toolbar ntawm sab xis.
Txuas ob txoj kab ntawm qhov ntsuas tam sim no mus rau qhov kawg ntawm qhov op amp tib lub sijhawm. Channel A yog siv los soj ntsuam DC voltage, thiab channel B yog siv los soj ntsuam AC ripple. Txhawm rau pab txhawb kev soj ntsuam, cov xim ntawm channel A kev sib txuas yog hloov mus rau lub teeb liab, thiab channel B yog siv los soj ntsuam AC ripple. Cov kab hloov mus rau lub teeb ntsuab, thiab xim ntawm lub waveform hloov raws li.
taw tes
Nyem rau "Khiav" khawm nyob rau sab xis saum toj kawg nkaus kom khiav lub voj voog, nyem ob npaug rau "Oscilloscope" icon qhib "Oscilloscope Display Window"
Ntawm lub qhov rais oscilloscope zaub, kho qhov zoom theem ntawm channel B. Qhov tseem ceeb tshaj plaws yog nyem AC coupling hauv AC coupling / DC coupling. Los ntawm "AC coupling" muaj nuj nqi, tsuas yog AC teeb liab tshwm sim. Kho qhov zoom theem ntawm channel B. Cov iav txo yog 5mV / Div, uas yog, txhua 5mV. Tom qab cais tawm DC 5V teeb liab los ntawm "AC coupling" thiab kho qhov scaling 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.
Kev txiav txim los ntawm qhov tseem ceeb ntsuas los ntawm tus cursor, DC voltage ntsuas los ntawm channel A yog li 5V, thaum lub ncov-rau-peak tus nqi ntawm channel B yog 26.897mV.
Yuav ua li cas kuaj lub ripple coefficient ntawm DC fais fab mov nrog lub oscilloscope
