Xa ujonga indlela esebenza ngayo isekethe yombane nge-AC voltage, ufumana into entle. Ii-resistors, ii-capacitors, kunye nee-inductors nganye itshintsha indlela esebenza ngayo isekethe. I-Impedance, i-reactance, kunye nomahluko wesigaba ziqala ukubaluleka kakhulu. Uhlalutyo lwe-AC voltage kunye nesekethe lukunceda ubone indlela ezi nxalenye ezisebenzisana ngayo. Uyilo oluphambili lwe-PCB kunye nezixhobo zokulinganisa zenza umsebenzi wakho ube lula kwaye ube ngcono.
Icebiso: Izixhobo zokulinganisa zinokukunceda ufumane iingxaki ngaphambi kokuba wakhe isekethe yokwenyani.
IItrakthi ezibalulekileyo
I-AC voltage iyahamba iye phambili nangasemva. Oku akufani ne-DC voltage. Ukwazi oku kukunceda uqonde indlela osebenza ngayo umbane emakhayeni nakwiivenkile.
Impedance yenziwe ngokuxhathisa kunye nokusabela kwi-AC circuits. Kufuneka usoloko ujonga i-impedance. Oku kukunceda ukuba ungenzi iimpazamo xa ufunda ii-circuits.
Ii-capacitors kunye nee-inductors zitshintsha umbane kunye ne-voltage ngeendlela ezahlukeneyo. Ii-capacitors zenza umbane ube ngaphambi kombane. Ii-inductors zenza umbane ube emva kombane.
Izixhobo zokulinganisa Njenge-OrCAD PSpice ikuvumela ukuba uvavanye iisekethe kuqala. Oku kukunceda wonge ixesha. Kukunceda nokuba wenze iimpazamo ezimbalwa kuyilo lwakho.
Kufuneka ulandele imithetho elungileyo kwi-AC Uyilo lweseketheSebenzisa ulawulo oluchanekileyo lwe-impedance kwaye ujonge ukuthembeka. Oku kwenza iisekethe zakho zisebenze ngcono kwaye zihlale ixesha elide.
Iziseko zeVolthi ye-AC
Yintoni i-AC Voltage
Usebenzisa amandla ombane ac Ngalo lonke ixesha. Usenokungayiboni. I-AC voltage ithetha ukuba umbane utshintsha icala. Ibuyela umva naphambili. Umbane othe ngqo uhamba kwicala elinye kuphela. I-AC voltage itshintsha iindlela amaxesha amaninzi. Oku kwenza i-ac voltage yahluke. Ufumana i-ac voltage emakhaya nakwiishishini.
Nantsi itheyibhile ebonisa indlela i-ac voltage kunye ne-dc voltage ezingafani ngayo:
ipropati | I-AC Voltage | DC Voltage |
|---|---|---|
Isalathiso sokuHamba | Utshintsho phakathi kokuhle nokubi | Ihamba kwicala elinye |
Amandla | Inesimo segagasi | Ihlala ifana |
Ubuninzi | Kuxhomekeke ekubeni uhlala phi | Akukho rhoqo, ihlala izinzile |
izicelo | Ilungele ukuthumela umbane kude | Isetyenziselwa izixhobo kunye neebhetri |
UkuGcinwa kwamandla | Ayisetyenziselwa ukugcina umbane | Isetyenziswa kwiibhetri nakwiisekethe |
Isigaba seShift | Itshintshiwe zii-inductors kunye nee-capacitors | Akukho tshintsho lwesigaba |
I-AC voltage inyuka ihla ngendlela ethile. Itshintsha phakathi kwe-positive ne-negative. I-AC voltage ine-frequency kunye ne-amplitude. Isetyenziselwa ukuthumela umbane kude kuba isebenza nee-transformers. I-Dc voltage ihlala ifana kwaye isetyenziswa kwiibhetri kunye nee-USB ports.
I-Sine Wave kunye neeVrms
Uninzi lwe-ac voltage lulandela i-sine wave. I-sine wave inyuka iye kwinqanaba eliphezulu, yehle iye kwi-zero, yehle iye kwinqanaba eliphantsi, ize ibuyele kwi-zero. Ungasebenzisa i-math equation ukubonisa i-ac voltage:
V(t) = Vp * isono(2πft)
I-Vp yeyona voltage iphezulu. u-f yifrequency. u-t lixesha. I-peak voltage yeyona xabiso likhulu. Ii-Vrms zisetyenziselwa ukulinganisa i-ac voltage. Ii-Vrms zikuxelela ukuba i-ac voltage inamandla kangakanani. Ikunceda ufumane amandla.
Ii-Vrms zifunyanwa ngokuthatha ingcambu yesikwere yomndilili wamaxabiso aphindwe kabini.
Kwi-sine wave, ii-Vrms = 0.7071 x Vpeak.
Umzekelo: Ukuba i-voltage ephezulu yi-25 volts, iiVrms = 0.7071 x 25V = 17.68V.
IiVrms zikuvumela ukuba uthelekise i-ac voltage ne-dc voltage. Ibonisa ukuba bungakanani ubushushu obenziwayo kwi-resistor.
Imizekelo ye-AC yehlabathi lokwenyani
Ubona i-ac voltage yonke imihla. Inika amandla izibane, izixhobo, kunye neekhompyutha. I-ac voltage isebenza kwifriji yakho, kwiTV, nakwi-air conditioner. Iifektri zisebenzisa i-ac voltage kwiimashini ezinkulu. Iindawo ezininzi zisebenzisa i-ac voltage yesigaba sesithathu. Inika amandla azinzileyo kwaye isebenza kwimithwalo enzima.
I-AC voltage isetyenziswa kwizibane nakwizixhobo.
Iifektri zisebenzisa i-ac voltage kwiimatshini.
I-voltage ye-ac yesigaba sesithathu isetyenziselwa amandla azinzileyo kwimizi-mveliso.
Qaphela: I-Ac voltage inceda ukuthumela umbane kude ngaphandle kokulahlekelwa ngamandla amaninzi. Iintambo zombane zisebenzisa i-ac voltage endaweni ye-dc voltage.
Usebenzisa i-ac voltage ekhaya, esikolweni, nasemsebenzini. Ukwazi nge-ac voltage kukunceda uqonde indlela umbane ohamba ngayo kunye nendlela osebenza ngayo izinto.
IsiZukulwana soMbane we-AC
Umthetho kaFaraday
Ungafunda indlela eyenziwa ngayo i-ac voltage ngokusebenzisa uMthetho kaFaraday wokungenisa. Lo mthetho uthi ukuhambisa ikhoyili kufutshane nentsimi yemagnethi kwenza umbane kwintambo. Kwijenereyitha, ikhoyili ijikeleza ngaphakathi kwintsimi yemagnethi. Xa ikhoyili ijika, inqumla imigca yemagnethi. Oku kwenza umbane kwikhoyili utshintshe. Umbane uyenyuka uyehla ngendlela egudileyo. Wenza i-sine wave. Yiyo loo nto umbane ovela kwijenereyitha ungumbane otshintshanayo (AC). UMthetho kaFaraday yimbangela yokuba zonke iijenereyitha ze-AC zisebenze kwizityalo zamandla nakwiindlu.
Khumbula: Ukuba ikhoyili ijikeleza ngokukhawuleza, ufumana i-voltage engaphezulu.
Imigaqo yoMvelisi
Ungafumana iijenereyitha kwizikhululo zamandla nakwezinye iimoto. Ezi matshini zisebenzisa i-electromagnetic induction ukwenza umbane. Nantsi indlela ezisebenza ngayo:
Ijenereyitha ye-AC, okanye i-alternator, ine-spinning coil ebizwa ngokuba yi-rotor kunye ne-magnet ebizwa ngokuba yi-stator.
Irotor iyajikeleza kwaye ihambe ngentsimi yemagnethi ye-stator.
Le ntshukumo yenza i-voltage kwi-coil.
Xa i-rotor iqhubeka ijikeleza, i-voltage itshintsha icala. Oku kwenza ukuba umbane ubuye ubuye.
Ijenereyitha ngumatshini oguqula amandla ajikelezileyo abe ngamandla ombane. UMichael Faraday ufumanise ukuba oku kusebenza njani, kwaye sisasebenzisa ingcamango yakhe. Iijenereyitha zinokwenza amandla e-AC okanye e-DC, kodwa uninzi lwezityalo zamandla zisebenzisa i-AC. Amandla e-AC angcono ekuthumeleni umbane kude.
Icebiso: Indlela eyakhiwe ngayo ijenereyitha yiyo egqibayo ukuba ufumana na umbane we-AC okanye we-DC.
Iingcamango zoHlalutyo lweSekethe ye-AC
Ukuze uqonde iisekethe ze-ac, kufuneka wazi izinto ezintathu. Ezi yi-impedance, i-reactance, kunye nomahluko wesigaba. Ezi ngcinga zibonisa ukuba kutheni iisekethe ze-ac zingafani neesekethe ze-dc. Uzisebenzisa ukusombulula iingxaki zokwenyani kwi-elektroniki.
Impedance vs Ukumelana
Kwiisekethe ze-ac, ujongana nokungaphezulu nje kokuxhathisa. Ukuxhathisa kulula. Kubonisa indlela i-resistor ecothisa ngayo umsinga. Ukungavisisani kunzima ukukuqonda. Kudibanisa ukuxhathisa kunye nokusabela kunye. Ukuxhathisa kuvela kwii-capacitors kunye nee-inductors. Ukungavisisani kukuxelela indlela ezisebenza ngayo zonke ezi ndawo kwiisekethe ze-ac.
Nantsi itheyibhile ebonisa indlela i-impedance, ukumelana, kunye ne-reactance ezinxulumene ngayo:
ilungu | formula |
|---|---|
I-Impedans (Z) | Z = √(R² + (1/ωC)²) |
Ukuchasa (R) | R (inxalenye yokwenyani ka-Z) |
Ukusabela kwe-Capacitive (XC) | XC = 1/(ωC) |
Impedance ifana nomqobo kwi-ac. Inenxalenye yokwenyani ebizwa ngokuba yi-resistance. Ikwanayo nenxalenye ecingelwayo ebizwa ngokuba yi-reactance. Xa wenza uhlalutyo lwesekethe, kufuneka usebenzise i-impedance. Ukuba usebenzisa i-resistance kuphela, uya kufumana impendulo engalunganga. Abantu abaninzi bayalibala ukujonga i-impedance kwinxalenye nganye. Oku kubangela iimpazamo kwiisekethe ze-ac.
Icebiso: Soloko ujonga i-impedance yenxalenye nganye ngaphambi kokuba wenze isekethe ibe lula. Oku kukuthintela ekudibaniseni ukuxhathisa, i-inductance, kunye ne-capacitance.
Iintlobo zokusabela
I-Reactance yinxalenye ye-impedance. Ivela kwii-capacitors kunye nee-inductors. I-Reactance itshintsha indlela i-ac ehamba ngayo kwisekethe. Kukho iintlobo ezimbini eziphambili ze-reactance.
I-Inductive reactance yenza ukuba i-current lag emva kwe-voltage. Oku ukubona kwiikhoyili nakwii-inductors.
Ukusabela kwe-capacitive kwenza i-voltage ihlale emva kombane. Oku ukubona kwii-capacitors.
Nantsi itheyibhile ebonisa ukuba uhlobo ngalunye lwe-reactance lwenza ntoni kwiisekethe ze-ac:
Uhlobo lokuphendula | Impembelelo kwi-Current kunye ne-Voltage | Ulwalamano lweSigaba |
|---|---|---|
I-Inductive Reactance | I-voltage yangoku isemva kwexesha | I-voltage leads yangoku yi-90º |
Ukusabela okunamandla | I-voltage isemva kwexesha langoku | I-voltage yangoku yee-leads yi-90º |
Ungasebenzisa iifomula ukufumana i-reactance:
ilungu | formula |
|---|---|
Ukusabela okunamandla | XC = 1 / (2πfC) |
I-Inductive Reactance | I-XL = 2πfL |
Ii-capacitors kunye nee-inductors azisebenzi ngendlela efanayo kwiisekethe ze-ac. Ii-capacitors zilwa notshintsho kwi-voltage. Zithatha okanye zikhuphe i-current njengoko zitshaja okanye zilahlekelwa yi-charge. Ii-inductors zilwa notshintsho kwi-current. Zigcina amandla kwindawo yemagnethi. Kufuneka usebenzise ifomula efanelekileyo kwinxalenye nganye xa uhlalutya.
Qaphela: Ukuba uxuba iintlobo ze-reactance okanye usebenzisa ifomula engalunganga, uhlalutyo lwakho lwesekethe aluyi kusebenza.
Umahluko weSigaba
Umahluko wesigaba ubalulekile kwiisekethe ze-ac. Ubonisa ukuba ingakanani i-current kunye ne-voltage ezingahambelaniyo. Kwi-resistor, i-voltage kunye ne-current zihamba kunye. Kwiisekethe ezine-reactance, azihambi kunye.
Ukuba i-engile yesigaba ingu-zero, i-voltage kunye ne-current ziyahambelana. Ufumana amandla amaninzi.
Ukuba i-engile yesigaba ayingo-zero, ulahlekelwa ngamandla athile. Oku kwenzeka ngee-inductors kunye nee-capacitors.
Ukuba i-engile yesigaba ingama-90°, akukho mandla apheleleyo anikwayo. Amandla ayahamba nje aye phambili nangasemva.
Umahluko wesigaba utshintsha ubungakanani bamandla owafumanayo. Xa uyila okanye ulungisa iisekethe ze-ac, kufuneka ujonge umahluko wesigaba. Oku kukunceda wonge amandla kwaye kugcine izixhobo zakho zisebenza kakuhle.
Icebiso: Soloko ujonga ubudlelwane besigaba xa usenza uhlalutyo lwesekethe. Oku kukunceda ufumane iingxaki ngaphambi kokuba zibe mbi ngakumbi.
Iindlela ezilungileyo zoHlalutyo lweSekethe ye-AC
Ungaziyeka iimpazamo eziqhelekileyo kwiisekethe ze-ac ngokulandela la manyathelo:
Sebenzisa amanani antsonkothileyo rhoqo ukuze ufumane i-impedance.
Jonga i-impedance yenxalenye nganye ngaphambi kokuba wenze isekethe ibe lula.
Sebenzisa imizobo yeebhloko ukucwangcisa iinxalenye zesekethe yakho kunye nezamaqela.
Beka ii-capacitor ezidibanisayo nezidlulayo kufutshane nezixhobo zombane ukuze umise ingxolo.
Sebenzisa izithinteli zokutsala phezulu kunye nezithintelo zokutsala ukuze ugcine amanqanaba engqiqo eqinileyo.
Khetha iindawo ngokukhangela amaphepha edatha uze uqinisekise ukuba azindala.
Vavanya isekethe yakho ngezixhobo zokulinganisa ngaphambi kokuba uyakhe.
Bhala phantsi umsebenzi wakho ukuze abanye baqonde baze balungise iingxaki.
Ukuba ulandela la manyathelo, uhlalutyo lwakho lwesekethe ye-ac luya kuba ngcono. Uya kwenza iisekethe ezingcono kwaye ulungise iingxaki ngokukhawuleza.
IiResistor kwi-AC Circuits
Ukunganyamezelani koMxhasi
Xa ubeka i isithinteli kwisekethe ye-ac, isebenza ngokulula. I-impedance ye-resistor isoloko ifana ne-resistor yayo. I-frequency ayitshintshi indlela esebenza ngayo i-resistor. I-resistor ayinandaba nokuba isignali ye-ac iyakhawuleza okanye icotha. Ungasebenzisa i-resistor nayo nayiphi na imithombo ye-ac, kwaye ixabiso layo lihlala lifana.
Impedance ye-resistor kwiisekethe ze-ac kukumelana kwayo kuphela.
Ukuba usebenzisa i-resistor ye-10 ohm, i-impedance yi-10 ohms rhoqo.
I-resistor ayibangeli naluphi na utshintsho lwesigaba kwisignali ye-ac.
Ungabhala i-impedance ngolu hlobo: Z = 10 + j0 ohms kwi-resistor ye-10 ohm.
Iiresistor zinceda ukulawula umbane kwiisekethe ze-ac. Zikwanceda ekumiseni amanqanaba e-voltage. Iresistor isebenza ngendlela efanayo kwiisekethe ze-ac kunye neze-dc. Akunyanzelekanga ukuba ucinge rhoqo xa ukhetha iresistor kwiprojekthi yakho ye-ac.
Icebiso: Xa uyila iisekethe ze-ac, ungathemba ukuba i-resistor iza kusebenza ngendlela efanayo ngalo lonke ixesha.
Isigaba kwi-AC
Kuya kufuneka wazi indlela i-resistor echaphazela ngayo isigaba se-voltage kunye nomsinga kwiisekethe ze-ac. I-resistor igcina i-voltage kunye nomsinga kunye. Ziya phezulu nasezantsi ngaxeshanye. Akukho kulibaziseka phakathi kwazo. Oku kwenza ii-resistor zahluke kwii-capacitors kunye nee-inductors.
ilungu | Ulwalamano lweSigaba |
|---|---|
Isixhasi | I-voltage kunye nomsinga zikwisigaba (ii-degrees ezi-0) |
Umphathi | I-voltage yangoku yee-leads ngama-90 degrees |
I-inductive | I-voltage yangoku yokulibaziseka ngama-degrees angama-90 |
Nantsi indlela elula yokukhumbula. Kwi-resistor, i-voltage kunye ne-current match. Kwi-capacitor, i-current iza kuqala. Kwi-inductor, i-current iza emva kwayo. Abanye abantu basebenzisa "u-ELI the ICE man" ukukhumbula le mithetho yesigaba.
Kwiisekethe ze-ac ezinee-resistor kuphela, ufumana amandla amaninzi.
Awulahlekelwa ngamandla ngenxa yokutshintsha kwesigaba.
I-resistor yenza uhlalutyo lube lula kuba akufuneki ufumane ii-engile zesigaba.
Ungasebenzisa ii-resistor ukwenza ii-ac circuits ezilula. Ungazixuba nee-capacitors kunye nee-inductors ukwakha izihluzi kunye nezinye izinto ezintle.
IiCapacitors kwii-AC Circuits
Ukusabela okunamandla
Xa ubeka i-capacitor kwisekethe ye-ac, isebenza ngendlela eyahlukileyo kune-resistor. I-capacitor ivimba ezinye iimpawu ze-ac kodwa ivumela ezinye iimpawu ukuba zidlule. Oku kuvala kubizwa ngokuba yi-capacitive reactance. Ungatshintsha ukuba i-capacitor ivimba kangakanani ngokutshintsha i-frequency okanye ubungakanani be-capacitor.
Ungasebenzisa ifomula ukufumana i-capacitive reactance:
Eziguqukayo | inkcazelo |
|---|---|
XC | Ukusabela kwamandla kwi-ohms (Ω) |
f | Ireyithi yombane otshintshanayo kwi-hertz (Hz) |
C | Umthamo kwi-farads (F) |
formula | XC = 1 / (2π f C) |
Ukuba wenza i-frequency ibe phezulu, i-capacitive reactance iba ncinci. Ukuba usebenzisa i-capacitor enkulu, i-reactance nayo iba ncinci. I-high-frequency ac signals zidlula kwi-capacitor ngokulula. I-low-frequency ac signals zivaliwe yi-capacitor. Usebenzisa oku ukwenza i-low-pass filter. I-low-pass filter ivumela i-low-frequency signals ukuba idlule kwaye iyeke i-high-frequency signals. Ubona ii-low-pass filters kwiiradiyo nakwiinkqubo ze-audio. Ungakha i-low-pass filter nge-resistor kunye ne-capacitor.
Icebiso: Ungayitshintsha indawo yokucima isihluzi esiphantsi ngokukhetha i-capacitor eyahlukileyo.
Isigaba seVoltage-Current
Ufanele wazi indlela i-voltage kunye nomsinga osebenza ngayo kwi-capacitor. Kwiisekethe ze-ac, umsinga ufikelela kwinqanaba eliphezulu ngaphambi kokuba i-voltage ifikelele. Umsinga ukhokela i-voltage ngama-90 degrees. Olu tshintsho lwesigaba lutshintsha indlela esebenza ngayo isekethe.
Nantsi itheyibhile ebonisa indlela utshintsho lwesigaba olutshintsha ngayo rhoqo:
Range Ubuninzi | Isigaba seShift | Ukuziphatha kweSekethe |
|---|---|---|
Iifrikhwensi eziphantsi | Iindlela ze-90° | Ilawulwa yi-capacitor |
Iifrikhwensi eziphezulu | Iindlela ze-0° | Iziphatha njengokumelana okumsulwa |
Kwi-frequency ephantsi, i-capacitor ilawula i-ac circuit. I-phase shift ikufutshane nama-90 degrees. Kwi-frequency ephezulu, i-capacitor isebenza njenge-resistor. I-phase shift iba ncinci. Usebenzisa olu shift lwesigaba ukuyila izihluzi ezidlula kancinci. I-low-pass filter isebenzisa umahluko wesigaba ukuvimba imiqondiso ongayifuniyo. Ii-capacitors zinceda ukuthambisa utshintsho lwe-voltage kwaye zisuse ingxolo. Ufumana ii-capacitors phantse kuzo zonke izixhobo ze-ac. Uzisebenzisa ukwenza izihluzi ezidlula kancinci zezithethi, iirediyo, kunye neekhompyutha.
Qaphela: Ungavavanya utshintsho lwesigaba nge-oscilloscope. Uza kubona incochoyi yangoku ngaphambi kwencochoyi yevolthi kwi-capacitor.
Ii-Inductors kwiisekethe ze-AC
I-Inductive Reactance
Xa ufaka i-inductor kwisekethe ye-ac, ilwa notshintsho kumbane. Oku akufani noko kwenziwa yi-resistor. Ukumelana kwe-inductor kubizwa ngokuba yi-inductive reactance. Ukusabela kwe-inductive kuxhomekeke kwi-frequency kunye nobukhulu be-inductor. Ukuba i-frequency iba phezulu, i-inductor ivimba umbane ongaphezulu. I-inductor enkulu ikwavimba umbane ongaphezulu.
Ungasebenzisa le theyibhile ukuze ubone indlela yokufumana i-inductive reactance:
Ifomula yokusabela ngokubangela | inkcazelo |
|---|---|
X_L = 2πfL | Ifomula yokufumana i-inductive reactance kwiisekethe ze-AC, apho i-X_L yi-inductive reactance, u-f yi-frequency, kwaye u-L yi-inductance. |
Ukuba wenza i-frequency inyuke, i-inductor ivimba umbane ongaphezulu. Yingakho ii-inductors zilungile ekumiseni imiqondiso ye-frequency ephezulu. Imiqondiso ye-frequency ephantsi isenokudlula. Uhlala usebenzisa ii-inductors kwiifilitha ze-ac kunye nezixhobo zamandla.
Icebiso: Ii-Inductors zikuvumela ukuba ukhethe ukuba zeziphi iimpawu ezinokuhamba kwisekethe yakho ye-ac.
Isigaba seVoltage yangoku
Ii-inductors zitshintsha indlela i-current kunye ne-voltage ezihamba ngayo kwiisekethe ze-ac. Xa usebenzisa i-alternating current, i-current ayihambelani ne-voltage. Kwi-inductor, i-current iza emva kwe-voltage ngama-90 degrees. Xa i-voltage iphezulu, i-current isese-zero. Xa i-voltage yehla iye kwi-zero, i-current iphezulu.
Lo mahluko wesigaba ubalulekile. Ubonisa indlela i-inductor egcina ngayo amandla. I-inductor igcina amandla kwindawo yemagnethi xa umbane utshintsha. Kamva, ibuyisela la mandla kwisekethe. Uyabona oku kwizinto ezifana neetransformers kunye neemoto.
Ii-inductors zigcina amandla xa utshintsho lwangoku.
I-current ihlala ilandela i-voltage kwi-inductor.
Olu xinzelelo lukunceda wakhe iisekethe ezilawula ixesha okanye iisignali zokucoca.
Ukuba ujonge i-oscilloscope, uza kubona ukuba i-voltage wave iza ngaphambi kwe-current wave ngekota yomjikelo. Lo mahluko wesigaba yinxalenye enkulu yendlela ii-ac circuits ezisebenza ngayo nee-inductors.
Qaphela: Ukwazi ngotshintsho lwesigaba phakathi kombane kunye nombane kukunceda wenze iisekethe ze-ac ezingcono kwaye uyeke ukulahleka kwamandla.
Uyilo lwePCB kunye nokulinganisa iiSekethe ze-AC
Izixhobo zokulinganisa
Ungayisebenzisa izixhobo zokulinganisa ukunceda ngohlalutyo lwe-ac. Ezi zixhobo zenza umsebenzi wakho ube lula kwaye uchaneke ngakumbi. I-OrCAD PSpice ikuvumela ukuba uvavanye isekethe yakho ngaphambi kokuba uyakhe. Ungajonga indlela esebenza ngayo isihluzo sakho ngemiqondiso eyahlukeneyo. I-OrCAD PSpice ikunika iindlela ezininzi zokuqhuba uhlalutyo lwe-ac. Ungabona indlela uyilo lwakho olusebenza ngayo ngeendawo ze-analog nezedijithali. Oku kukunceda ufumane iingxaki kwangethuba kwaye uzilungise.
Icebiso: Iziphumo zokulinganisa zisondele kwiimilinganiselo zokwenyani. Uninzi lwexesha, iziphumo ziyafana ngaphezu kwama-90%. Malunga ne-10% kuphela yahlukile.
Ungasebenzisa ezi zixhobo ukuvavanya uyilo lwezihluzo. Ungatshintsha amaxabiso ubone ukuba kwenzeka ntoni ngokukhawuleza. Oku kukongela ixesha nemali. Akunyanzelekanga ukuba wakhe iisekethe ezininzi zovavanyo. Ungalandela nemithetho yoshishino kuyilo lwakho. Oku kukunceda uphephe iingxaki zokuphazamiseka kwe-electromagnetic. Izixhobo ezilungileyo zokulinganisa zikunceda wenze ukhetho olungcono loyilo lwe-pcb kunye nohlalutyo.
Ukuthembeka kuyilo lwe-AC
Ufuna isekethe yakho ye-ac ihlale ixesha elide. Ungasebenzisa iitshekhi zokuthembeka ukuvavanya uyilo lwakho. Nantsi itheyibhile ebonisa ezinye iitshekhi ezibalulekileyo:
Metric | inkcazelo |
|---|---|
MTTF | Ixesha Eliphakathi Lokusilela, kwizinto ongenakukwazi ukuzilungisa |
MTBF | Ixesha Eliphakathi Phakathi Kokusilela, kwizinto onokuzilungisa |
Ukudinwa komjikelo wobushushu | Ukusilela kwimijikelo yokufudumeza nokupholisa kwiindawo zokudibanisa i-solder |
Ukungcangcazela koomatshini | Ukungaphumeleli ngenxa yokushukuma okanye ukushukuma kweendawo |
Ukungaphumeleli komothuko | Ukungaphumeleli ngenxa yempembelelo ekhawulezileyo kwiindawo zokudibanisa i-solder |
Ukuqhekeka komngxuma ongaphakathi kwepleyiti | Ukuqhekeka kwimingxunya edibanisa iileya kwi-PCB |
Ungasebenzisa amanyathelo oyilo olukrelekrele ukwenza iisekethe ze-ac zibe namandla ngakumbi. Nazi ezinye iindlela zokunciphisa ukulahleka kwesiginali kunye nokuyeka ukuphazamiseka:
Ulawulo lwe-Impedance lugcina imiqondiso izinzile kwaye luyekisa ukubonakalisa.
Ukunciphisa i-EMI kusebenzisa isiseko esihle kunye nokukhusela ukuthintela ingxolo.
Ulawulo lokungaqhubeki kwe-Impedance luthintela iingxaki zesignali, ingakumbi kwiisekethe zokucoca ezikhawulezayo.
Kufuneka ulandele imithetho yokubeka izithuba kunye nokulungelelanisa. Oku kugcina uyilo lwakho lukhuselekile kwaye kulula ukulukha. Xa usebenzisa la manyathelo, uyilo lwakho lwesihluzo luya kusebenza ngcono kwaye luhlale ixesha elide.
Uqaphela izinto ezikhethekileyo ezenzekayo kwiisekethe ze-ac ezinee-resistors, ii-capacitors, kunye nee-inductors. Ii-resistors zivumela umbane kunye ne-voltage zifikelele kwiindawo zazo eziphezulu kunye. Ii-capacitors zenza umbane ufikelele kwindawo yawo ephezulu ngaphambi kokuba i-voltage yenze njalo. Ii-inductors zenza umbane ufikelele kwindawo yawo ephezulu ngaphambi kokuba i-voltage ifikelele. Ukuba ufunda nge-impedance, i-reactance, kunye ne-phase, ungenza iisekethe ezingcono. Oku kukunceda ukulungisa iingxaki kunye nokuphucula indlela esebenza ngayo iisekethe zakho. Ungashukumisa umbane ngcono kwaye ugcine imiqondiso icacile. Izixhobo zokulinganisa kunye neenkqubo zoyilo lwe-PCB zikunceda uvavanye iisekethe ze-ac. Ungabona indlela i-voltage etshintsha ngayo kwaye ujonge ukuba isekethe yakho iya kuhlala ixesha elide na. Ezi zixhobo zikunceda wenze iinkqubo zombane ezikhuselekileyo nezisebenza ngcono.
FAQ
Kwenzeka ntoni ukuba uqhagamshela i-resistor, i-capacitor, kunye ne-inductor kwisekethe enye?
Udala isekethe enokucoca iisignali. I-resistor ilawula umbane. I-capacitor kunye ne-inductor zongeza i-reactance. Ungasebenzisa olu seto ukufunda impendulo ye-frequency yesekethe kwaye ubone indlela iisignali ezitshintsha ngayo kwiifrequencies ezahlukeneyo.
Isebenza njani i-high-pass filter kwisekethe?
Isihluzo esidlula kakhulu sivumela imiqondiso yesandi esiphezulu ukuba ihambe kwisekethe. Sivala imiqondiso yesandi esidlula kancinci. Uhlala usebenzisa esi sihluzo ukususa ingxolo engafunekiyo. Ungakha isihluzo esidlula kakhulu nge-capacitor kunye ne-resistor.
Kutheni ufuna uhlalutyo lwefrikhwensi kwiisekethe ze-AC?
Usebenzisa uhlalutyo lwefrikhwensi ukuze ubone indlela isekethe esabela ngayo kwimiqondiso eyahlukeneyo. Oku kukunceda ufumane ukuba zeziphi imiqondiso ezidlulayo kunye neziphi ezivalwayo. Ungajonga ukuba isekethe yakho isebenza kakuhle na kumculo, kwirediyo, okanye kwezinye izinto ezisetyenziswayo.
Yintoni i-oscillator, kwaye kutheni ibalulekile?
I-oscillator yenza isignali ephindaphindayo kwisekethe. Uyisebenzisa ukwenza imiqondiso yewotshi, izandi, okanye amaza erediyo. Uyilo lweesekethe ze-oscillator lukunceda ukulawula ixesha kunye nokuma kwezi signali.
I-frequency iyichaphazela njani indlela esebenza ngayo isekethe?
Ukuphindaphinda kutshintsha indlela ii-capacitors kunye nee-inductors ezisebenza ngayo kwisekethe. Kwii-frequency eziphezulu, ii-capacitors zivumela ukuhamba kombane ngakumbi. Ii-inductors zivimba umbane ngakumbi. Kufuneka uvavanye isekethe yakho kwii-frequency ezahlukeneyo ukuze ubone ukuba isebenza njani.
