I. Isingeniso
Amanzi Angakhanyisa Amakhandlela, Ingabe Kuyiqiniso?Iqiniso!
Ngabe kuyiqiniso ukuthi izinyoka ziyayesaba irealgar?Amanga!
Esizoxoxa ngakho namuhla:
Ukuphazamisa kungathuthukisa ukunemba kokulinganisa, ingabe kuyiqiniso?
Ngaphansi kwezimo ezijwayelekile, ukuphazamiseka kuyisitha semvelo sokulinganisa.Ukuphazamisa kuzonciphisa ukunemba kokulinganisa.Ezimweni ezimbi kakhulu, ukulinganisa ngeke kwenziwe ngendlela evamile.Kusukela kulo mbono, ukuphazamiseka kungathuthukisa ukunemba kokulinganisa, okungamanga!
Nokho, ingabe lokhu kuhlale kunjalo?Ingabe kunesimo lapho ukuphazamiseka kunganciphisi ukunemba kokulinganisa, kodwa kunalokho kuyakuthuthukisa?
Impendulo ithi yebo!
2. Isivumelwano Sokugxambukela
Kuhlanganiswe nesimo sangempela, senza isivumelwano esilandelayo mayelana nokuphazamiseka:
- Ukuphazamiseka akuqukethe izingxenye ze-DC.Esilinganisweni sangempela, ukuphazamiseka ngokuyinhloko kuwukugxambukela kwe-AC, futhi lokhu kucatshangelwa kunengqondo.
- Uma kuqhathaniswa ne-voltage ye-DC elinganisiwe, i-amplitude yokuphazamiseka incane kakhulu.Lokhu kuhambisana nesimo sangempela.
- Ukuphazamisa isignali yezikhathi ezithile, noma inani elimaphakathi linguziro phakathi nesikhathi esinqunyiwe.Leli phuzu akulona iqiniso ngempela esilinganisweni sangempela.Kodwa-ke, njengoba ukuphazamiseka ngokuvamile kuyisignali ye-AC yefrikhwensi ephezulu, ekuphazamiseni okuningi, ukuvumelana kwencazelo yeqanda kufanelekile isikhathi eside.
3. Ukunemba kokulinganisa ngaphansi kokuphazanyiswa
Amathuluzi amaningi okulinganisa kagesi namamitha manje asebenzisa iziguquli ze-AD, futhi ukunemba kwazo kokulinganisa kuhlobene eduze nokulungiswa kwesiguquli se-AD.Ngokuvamile, iziguquli ze-AD ezinokulungiswa okuphezulu zinokunemba okuphezulu kokulinganisa.
Kodwa-ke, ukulungiswa kwe-AD kuhlale kunomkhawulo.Uma sicabanga ukuthi ukulungiswa kwe-AD kungamabhithi angu-3 kanti i-voltage yokulinganisa ephakeme kakhulu ingu-8V, isiguquli se-AD silingana nesilinganiso esihlukaniswe izigaba ezingu-8, isigaba ngasinye singu-1V.ngi 1v.Umphumela wokulinganisa wale AD uhlala uyinombolo ephelele, futhi ingxenye yedesimali ihlale ithwalwa noma ilahlwa, okucatshangwa ukuthi iphathwa kuleli phepha.Ukuphatha noma ukulahla kuzodala amaphutha okulinganisa.Isibonelo, i-6.3V inkulu kune-6V futhi ingaphansi kuka-7V.Umphumela wokulinganisa we-AD ungu-7V, futhi kukhona iphutha lika-0.7V.Leli phutha silibiza ngephutha le-AD quantization.
Ukuze kube lula ukuhlaziya, sicabanga ukuthi isikali (isiguquli se-AD) asinawo amanye amaphutha okulinganisa ngaphandle kwephutha le-AD lokulinganisa.
Manje, sisebenzisa izikali ezimbili ezifanayo ukukala ama-voltage amabili e-DC aboniswe kuMfanekiso 1 ngaphandle kokuphazamiseka (isimo esikahle) kanye nokuphazamiseka.
Njengoba kuboniswe kuMfanekiso 1, i-voltage ye-DC elinganisiwe yangempela ingu-6.3V, futhi i-voltage ye-DC esithombeni esingakwesokunxele ayinakho ukuphazamiseka, futhi iyivelu engaguquki.Isibalo esingakwesokudla sibonisa i-current eqondile ephazanyiswe i-alternating current, futhi kukhona ukuguquguquka okuthile kwevelu.I-voltage ye-DC kumdwebo ongakwesokudla ilingana ne-voltage ye-DC kumdwebo ongakwesokunxele ngemva kokuqeda isignali yokuphazamiseka.Isikwele esibomvu esithombeni simele umphumela wokuguqulwa wesiguquli se-AD.
I-voltage ye-DC ekahle ngaphandle kokuphazamiseka
Faka i-DC ephazamisayo enenani elimaphakathi likaziro
Yenza izilinganiso ezingu-10 zamanje eziqondile ezimweni ezimbili ezisesithombeni esingenhla, bese wenza isilinganiso sezilinganiso eziyi-10.
Isikali sokuqala kwesokunxele sikalwa izikhathi ezingu-10, futhi ukufundwa kuyefana isikhathi ngasinye.Ngenxa yethonya lephutha le-AD quantization, ukufundwa ngakunye kungu-7V.Ngemuva kokuthi izilinganiso eziyi-10 zilinganiselwe, umphumela usengu-7V.Iphutha le-AD quantization ngu-0.7V, futhi iphutha lesilinganiso ngu-0.7V.
Isikali sesibili kwesokudla sishintshe kakhulu:
Ngenxa yokuhluka kokuhle nokubi kwe-voltage yokuphazanyiswa kanye ne-amplitude, iphutha le-AD quantization lihlukile ezindaweni zokulinganisa ezahlukene.Ngaphansi koshintsho lwephutha le-AD lokulinganisa, umphumela wokulinganisa we-AD uyashintsha phakathi kuka-6V no-7V.Izilinganiso eziyisikhombisa zaziyi-7V, ezintathu kuphela zaziyi-6V, kanti isilinganiso sezilinganiso eziyishumi sasingu-6.3V!Iphutha ngu-0V!
Eqinisweni, alikho iphutha elingenakwenzeka, ngoba emhlabeni wenhloso, ayikho i-6.3V eqinile!Nokho, zikhona ngempela:
Uma kungekho ukuphazamiseka, njengoba umphumela wokulinganisa ngamunye uyafana, ngemuva kokulinganisa izilinganiso eziyi-10, iphutha lihlala lingashintshiwe!
Uma kukhona inani elifanele lokugxambukela, ngemva kokulinganisa okungu-10, iphutha le-AD quantization lincishiswa ngomyalelo wobukhulu!Isixazululo sithuthukiswa ngokuhleleka kobukhulu!Ukunemba kwesilinganiso nakho kuthuthukiswa ngokuhleleka kobukhulu!
Imibuzo esemqoka yilena:
Ingabe kuyefana lapho i-voltage elinganisiwe ingenye amanani?
Abafundi bangase bafise ukulandela isivumelwano sokugxambukela esigabeni sesibili, baveze ukugxambukela ngochungechunge lwamanani ezinombolo, babeke phezulu ukugxambukela kugesi olinganisiwe, bese bebala imiphumela yokulinganisa yephuzu ngalinye ngokuvumelana nesimiso sokuthwala sesiguquli se-AD. , bese ubala inani elimaphakathi lokuqinisekisa, inqobo nje uma i-amplitude yokuphazamiseka ingabangela ukufundwa ngemva kwe-AD quantization, futhi imvamisa yesampula iphezulu ngokwanele (izinguquko zokuphazamiseka kwe-amplitude zinenqubo yoshintsho, kunamanani amabili okuphozithivu nokubi. ), futhi ukunemba kufanele kuthuthukiswe!
Kungafakazelwa ukuthi inqobo nje uma i-voltage elinganisiwe ingeyona inamba ncamashi (ingekho emhlabeni wenhloso), kuzoba nephutha le-AD quantization, kungakhathaliseki ukuthi iphutha le-AD quantization likhulu kangakanani, inqobo nje uma ubukhulu ukuphazamiseka kukhulu kunephutha le-AD lokulinganisa noma kukhulu kunokulungiswa okuncane kwe-AD, kuzobangela umphumela wokulinganisa ukuthi ushintshe phakathi kwamanani amabili ancikene.Njengoba ukuphazamiseka kuyi-symmetric ephozithivu futhi eyinegethivu, ubukhulu kanye namathuba okuncipha nokwanda kuyalingana.Ngakho-ke, lapho inani langempela liseduze kwalelovelu, amathuba okuthi yiliphi inani elizovela likhulu, futhi lizoba seduze kwalelo nani ngemva kokulinganisa.
Okungukuthi: inani elimaphakathi lezilinganiso eziningi (ukuphazamiseka kwesilinganiso senani linguziro) kumelwe lisondele kumphumela wokulinganisa ngaphandle kokuphazamiseka, okungukuthi, ukusebenzisa isignali yokuphazamiseka ye-AC enenani elimaphakathi likaziro kanye nezilinganiso eziningi zokulinganisa zinganciphisa i-AD Quantize efanayo. amaphutha, thuthukisa ukulinganiswa kwe-AD, futhi uthuthukise ukunemba kokulinganisa!
Isikhathi sokuthumela: Jul-13-2023
