Ukushintsha uma kuqhathaniswa nokunikezwa kwamandla okulayini: Yikuphi Ongakukhetha?

Uma kuziwa ekukhetheni ukunikezwa kwamandla, sivame ukuzithola sidabukile phakathi kwe-Switch Power Power Supply kanye ne-Linear Power Supply. Zombili izinhlobo zamandla kagesi zinezinzuzo zazo, okwenza zifaneleke izinhlelo zokusebenza ezahlukene. Ukuqonda umehluko phakathi kwabo kuzokusiza wenze isinqumo esinolwazi lapho uklama isistimu yakho yamandla.

Iyini i-Switch Power Supply?
I-Switching Power Supply wuhlobo lwamandla kagesi alawula amandla kagesi aphumayo kanye nawamanje ngokushintsha ngokushesha izingxenye zikagesi (njengama-transistors) avule futhi avale. Isebenza ngokuguqula i-voltage yokufaka ibe i-voltage oyifunayo isebenzisa izingxenye zemodi yokushintsha imvamisa ephezulu (njengeziguquli ze-boost, buck, noma buck-boost). Ukushintsha Izimpahla Zamandla kusebenza kahle kakhulu ngoba ziguqula amandla ngokulahlekelwa okuncane, okuwenza alungele amadivayisi adinga imiklamo ehlangene kanye nama-voltage alungisekayo.

Uma kuqhathaniswa nokunikezwa kwamandla omugqa ovamile, Ukushintsha Kwamandla Amandla akonga kakhulu amandla, ngokuvamile kufinyelela amazinga okusebenza kahle angaphezu kuka-80%, kuyilapho i-Linear Power Supplies ingasebenzi kahle futhi ikhiqiza ukushisa okwengeziwe.

Iyini i-Linear Power Supply?
I-Linear Power Supply iwumthombo wamandla ovamile olawula i-voltage ephumayo ngokulungisa yamanje. Isebenza ngokulungisa ngokuqondile i-voltage yokufaka nokulawula ukugeleza kwamanje ngokusebenzisa izakhi eziphikisayo noma imithombo yamanje ukuze kuzinziswe i-voltage ephumayo. Inzuzo eyinhloko ye-Linear Power Supplies yikhono layo lokuhlinzeka ngokukhipha okuzinzile okunomsindo omncane, okubenza bafanelekele izinhlelo zokusebenza ezidinga i-voltage ehlanzekile kakhulu futhi ezinzile.

Kodwa-ke, i-Linear Power Supplies ivamise ukungasebenzi kahle ngoba amandla engeziwe ahlakazwa njengokushisa. Isibonelo, lapho wehla amandla kagesi ukusuka ku-12V ukuya ku-5V, amandla angaphezulu aguqulwa abe ukushisa kunokuba asetshenziswe kahle.

Umehluko Obalulekile Phakathi Kokushintsha kanye Nokunikezwa kwamandla kalayini
Ukuphumelela

Ukushintsha Ukunikezwa kwamandla kusebenza kahle kakhulu kune-Linear Power Supplies. Basebenzisa amasu okushintsha imvamisa ephezulu ukuze baguqule amandla ngendlela ephumelelayo ngokulahleka kokushisa okuncane, ngokuvamile okufinyelela amazinga okusebenza kahle angama-80% noma ngaphezulu. Ngokuphambene, i-Linear Power Supplies iguqula i-voltage eyeqile ibe ukushisa, okuholela ekusebenzeni okuphansi, ngokuvamile ngaphansi kwama-50%.

Usayizi nobukhulu

Ukushintsha Ukunikezwa kwamandla ngokuvamile kuncane futhi kulula kune-Linear Power Supplies ngoba kusebenza kumaza aphezulu futhi kudinga ukuchithwa kokushisa okuncane. Awadingi ama-heatsink amakhulu noma izingxenye ezinkulu ukuze alawule ukushisa. Ngakolunye uhlangothi, I-Linear Power Supplies mikhudlwana futhi idinga ama-heatsink amakhulu ukuphatha ukushisa okukhiqizwa ukusebenza kahle kwawo okuphansi.

Umsindo Wokukhipha Nokuzinza

I-Linear Power Supplies ihamba phambili ekunikezeni amandla kagesi azinzile futhi angenamsindo. Ngenxa yomklamo wazo olula, zilungele izinhlelo zokusebenza ezidinga umsindo ophansi kakhulu namandla kagesi azinzile, njengezisetshenziswa zomsindo nezinsimbi ezinembayo.

Ukushintsha Izimpahla Zamandla, nokho, kungadala ukuphazamiseka kwe-electromagnetic (EMI) nomsindo ngenxa yokusebenza kwazo okunemvamisa ephezulu. Nakuba I-Switch Power Supplies yesimanje isebenzisa amasu okuhlunga nokuvikela ukuze kuncishiswe lezi zinkinga, ingase ingalungeli izinhlelo zokusebenza ezidinga umsindo ophansi kakhulu.

Cost

I-Linear Power Supplies ivame ukuba nezindleko eziphansi zokuqala ngenxa yokwakheka kwayo okulula. Kodwa-ke, ukusebenza kahle kwazo okuphansi kanye nosayizi omkhulu kusho ukuthi zingase zibe nezindleko eziphakeme zesikhathi eside mayelana nokusetshenziswa kwamandla nokulawulwa kokushisa.

I-Switching Power Supplies ngokuvamile inotshalo-mali oluphezulu ngenxa yomklamo wayo oyinkimbinkimbi nezinqubo zokukhiqiza. Kodwa-ke, ukusebenza kahle kwabo okuphezulu nokusebenzisa amandla okuphansi kungaholela ekwehleni kwezindleko eziphelele ngokuhamba kwesikhathi, ikakhulukazi ezinhlelweni ezisetshenziswa amandla aphezulu kanye nokusetshenziswa okuqhubekayo.

Izicelo

I-Switch Power Supplies ifanele ukusebenza kahle okuphezulu, izinhlelo zokusebenza zokusetshenziswa kwamandla aphansi ezidinga ukuphuma kwamandla kagesi alungisekayo, njengamandla asetshenziswa amakhompuyutha, izibani ze-LED, amashaja amabhethri, namathuluzi kagesi. Zifaneleke kahle kumadivayisi anamandla aphezulu kanye nezinhlelo zokusebenza lapho usayizi ohlangene ubalulekile.

I-Linear Power Supply ifaneleka kakhulu ezinhlelweni ezidinga amandla kagesi azinzile futhi angenamsindo, njengezikhulisi zomsindo, amathuluzi anembayo, namadivayisi ezokwelapha. Zilungele izimo lapho ikhwalithi ye-voltage ibaluleke kakhulu.

Ukukhetha phakathi kwe-Switch Power Power kanye ne-Linear Power Supply kuncike ezidingweni zakho zohlelo lokusebenza. Uma udinga amandla aphezulu, ahlangene, futhi aguquguqukayo, i-Switching Power Supply iyisinqumo esifanelekile, ikakhulukazi izinhlelo zokusebenza zamandla aphezulu kanye ne-variable-voltage.

Kodwa-ke, uma udinga ukunikezwa kwamandla okuhlinzeka ngomsindo ophansi kakhulu kanye ne-voltage ezinzile, i-Linear Power Supply ingaba inketho engcono, ikakhulukazi ezinhlelweni zokusebenza kumishini ebucayi njengamasistimu omsindo nezinsimbi ezinembayo. Nakuba Ukushintsha Kwamandla Amandla kunezinzuzo ezimweni eziningi, I-Linear Power Supplies isadlala indima ebalulekile ezinhlelweni ezithile ezikhethekile.

Ukuqonda umehluko phakathi kwezinhlobo ezimbili zamandla kagesi nokukhetha okulungile ngokusekelwe kuzimfuneko zakho kuzoqinisekisa ukuthi amadivayisi akho athola ukwesekwa kwamandla okuphelele.