Ungalukhetha Kanjani Ushintsho Lwamanje Lokudluliswa Kwamandla Akabili

Ekwakheni ukushintshwa kwamandla okubili, okubaluleke kakhulu imojula yokulawula yamanje (TCM), ngoba yamanje ayinamandla ngokwanele ukuhlangabezana nazo zonke izidingo.

Kokubili okokufaka nokuphumayo ekugcineni kunesiphikisayo umsebenzi waso uwukukhawulela okwamanje kububanzi obucacisiwe.Lesi resistor ngokuvamile sibizwa ngokuthi i-current limiting resistor (LOR) noma iyunithi yomkhawulo yamanje (LOC) noma iyunithi yomkhawulo yamanje (LU), futhi isetshenziselwa ukulawula ukuphuma kwamanje.

Iswishi yokudlulisa amandla amabili ejwayelekile inezinto ezimbili zamandla.

Elinye ishubhu lokukhiphayo, elilawula ukuvalwa kwe-MOSFET eyodwa, kanti enye iyishubhu yokufaka, elawula enye i-transistor esimweni sokungavaliwe.

Isekhethi ekhawulayo yamanje iyadingeka ukwenza womabili amashubhu avuleke futhi avaleke kanyekanye nokwenza i-MOSFET isebenze ngaphansi kwendawo yokuphumula.

Lesi isimiso esiyisisekelo kanye nokusetshenziswa kweswishi yokudlulisa amandla amabili.

Ekusetshenzisweni okungokoqobo, kufanele sinake indawo yokusebenza kanye nezidingo zayo, njengezinga lokushisa lokusebenza, umthwalo, izinga likagesi, imvamisa kanye neminye imingcele ihlangabezana nezidingo zokuklama.

Okokuqala, lapho sisebenzisa ukushintshwa kwamandla okumbaxambili, kufanele sinake usayizi womthwalo wokukhetha owamanje.

Ngesikhathi esifanayo, uma umthwalo ungowamanje omkhulu, ngakho-ke kuyadingeka ukukhetha okwamanje ofanele ukuze uhlangabezane nezidingo zamanje ezinkulu.

Ngokuvamile, ku-voltage yokufaka ilingana ne-voltage ephumayo kanye nokumelana nomthwalo, umthwalo omkhulu, omkhulu wamanje ohambisanayo.

Kweminye imikhiqizo emincane ye-elekthronikhi enamandla njengomakhalekhukhwini, ukusetshenziswa kwamandla kufanele kucatshangelwe futhi ibhethri akufanele lisetshenziswe libelikhulu kakhulu.

Okubili, ngomthwalo omncane uma kuqhathaniswa, njengebhethri lefoni ephathekayo (ukushaja), umphathi wekhompyutha (ukunikezwa kwamandla) umthwalo omncane kangako, uma kuwukushaja umakhalekhukhwini, kufanele sicabangele ukukhetha kwamandla afanele ngaphandle kokuphazamisa umsebenzi ojwayelekile webhethri. .

Uma kungumthombo wamandla womsingathi wekhompyutha, ekukhetheni isikhathi sokucabangela amandla alinganiselwe omsingathi.

Lokhu kuhlobene nomthamo webhethri lethu.

Ngenxa yokuthi i-current inkulu, ngakho-ke ukulahlekelwa kwamanje kukhulu, amandla okukhipha azoncishiswa ngokufanele;Ngesikhathi esifanayo, umthamo omkhulu wamanje ubuye usho ukushisa okwengeziwe, izidingo zamandla aphezulu kanye nezindleko zesistimu ezikhulayo.

Ngakho-ke ekukhetheni ukushintshwa kwamandla okumbaxambili kufanele kucabangele i-current, switching frequency, voltage input nezinye izici.

Okwesithathu, ngomthwalo omkhulu, njengebhodi lomama lekhompiyutha, ikhadi lehluzo, i-CPU enjalo imishini yokukhipha amandla aphezulu, ukuze kuqinisekiswe ukuthi imishini enqubweni yokunikezela ugesi engaphazamiseki isikhathi eside iqhubeke nokusebenza, kunconyelwa ukukhetha okufanele. okwamanje;

Lapho amandla emishini engenkulu, ungasebenzisa umshini omncane ophumayo, ongagcini nje ngokuqinisekisa ukuzinza kwesifunda ngesikhathi eside sokuhlinzekwa kwamandla okuqhubekayo, kodwa futhi kunciphisa umthelela ezingxenyeni eziphumayo.

Uma idizayini ingacabangi isistimu endaweni yokuphakelwa kwamandla okungaphazamiseki ukuthi isebenze ngokujwayelekile futhi idinga ukusebenza njalo, ungakhetha ukushintshwa kwamandla okumbaxambili okukhulu kwamanje.

Uma usebenzisa ukushintshwa kwamandla okumbaxambili, qiniseka ukuthi unaka amaphuzu alandelayo:

1. Ukushintsha kwamandla akabili kungcono kakhulu ukusebenzisa imodeli yokuvikela izinga lokushisa;2. Qinisekisa ukuthi i-voltage ihlala ingaphakathi kwebanga eliphephile phakathi nokusetshenziswa;3. Zama ukusebenzisa inkinobho yamandla ephindwe kabili yamanje, ingathuthukisa ukusebenza kokuqina kwesifunda;4. Ekwakhiweni, zama ukucabangela ukunikezwa kwamandla okuqhubekayo kwesikhathi eside kanye nesidingo esiqhubekayo sokunikezwa kwamandla komthwalo ophumayo, futhi ucabangele ukuzinza kwawo.

Okwesine, Uma sidinga ukuhlinzeka amandla kumishini noma eminye imithwalo emikhulu:

· Uma kudingeka ukunikezwa kwamandla okubili, kuzokhethwa ukunikezwa kwamandla kagesi okumbaxambili okukhona phakathi kwezinto ezimbili zamandla aphindwe izikhathi ezingu-1.5 kunani elilinganiselwe, noma okukalwe okwamanje ngokuthi u-100A, noma okukalwe njengamanje izikhathi ezingu-2 kuzokhethwa.

· Ukunikezwa kwamandla okunamandla aphezulu kanye nokumelana nomthwalo ophansi kufanele kukhethwe lapho kufanele kuhlinzekwe umthamo wamanje omkhulu.

· Uma sidinga ukufaka ugesi kwezinye izinto, kufanele sisebenzise ugesi okabili.

Okwesihlanu, uma singenazo izidingo eziqinile esimweni sokusebenza semishini.

Uma izidingo zedivayisi ziphansi kakhulu, njenge-<50A yamanje, <1A amandla okukhiphayo.

Ukuze ugweme ukugcwala ngokweqile (okufana nokuphezulu kakhulu), ngokuvamile lapho amandla okukhiphayo emancane kakhulu, awakwazi ukusebenzisa amandla amakhulu noma i-voltage.

Singasebenzisa ukushintshwa kwamandla okumbaxambili kuphela kanye nokumelana nomkhawulo kwamanje okunesilinganiso esiphezulu samanje ukuze sihlangabezane nezimfuneko.

Uma isilinganiso samanje sincane, ungasebenzisa i-current enkulu yeswishi yamandla akabili.