Power Supply Protection

Kete Power Supply

He maha ngā atu āhuatanga e mahi pānga mana supply-. I roto i enei ko te hunga mahi ki te tiaki i te supply, e rārangi ana i raro.

Overcurrent : He aratau kore meinga e putanga o nāianei utanga e te mea nui ake i whakaritea. Kei te iti te reira e te āheinga o nāianei mōrahi o te supply te mana, me te mana e te iahiko tiaki ā-. Ka taea hoki e te reira i te tūkino i te supply te mana i roto i ētahi wā. Iahiko Poto i waenganui i te putanga mana supply-me whenua e taea te waihanga ngā i roto i te pūnaha e kua iti anake e te āheinga o nāianei mōrahi me te parenga ia ā o te supply mana. Kahore he whāiti, ka taea e tenei nāianei tiketike meinga pukā ka tūkino i te supply mana rite te pai kia rite ki te kawenga, me ona interconnects (tohu poari taiawhio tāngia, taura). Na reira, kia whai whāiti (tiaki overcurrent) nāianei te nuinga kai mana e whakahohetia ki te nui te nāianei putanga he mōrahi i whakaritea.

Overtemperature:  Ko te pāmahana e ko runga ake uara tohua te supply o te mana me te ārai e taea ai te kore te mana supply-ranei. Ka taea e te pāmahana whakahaere nui tūkino te supply te mana, me te iahiko hono ki reira. Na reira, mahi maha kai te pūoko pāmahana me iahiko pānga ki te mono i te supply, ki te nui tona pāmahana whakahaere he uara motuhake. I roto i ngā, Semiconductors whakamahia i roto i te supply e whakaraerae ki te pāmahana tua atu o ratou rohe i tohua. He maha kai ngā tiaki overtemperature e tahuri atu te tokotoko, ki te nui te pāmahana te rohe tohua.

Overvoltage:  puta tenei aratau kore, ki te haere i te ngaohiko whakaputa i runga i te uara dc tohua, e taea tangohia ngaohiko dc nui e pakaru te iahiko kawenga. Tikanga, ka taea e kawenga pūnaha hiko te tu ake ki te 20% overvoltage a kahore he tetahi kino tūturu. Ki te ko te whakaaro tenei, tīpako i te supply e whakaiti tenei mōrearea. He maha kai ngā tiaki overvoltage e tahuri te supply atu ki te nui te ngaohiko whakaputa he nui tohua. Ko tētahi atu huarahi ko te ngōhiko zener crowbar e whakahaere nui o nāianei i te paepae overvoltage kia whakahohetia reira te nāianei mana supply-whāiti ka puru ana te reira iho.

: Soft Tīmata  kia hiahiatia ai Inrush herenga o nāianei, ka ko te tuatahi mana tono ranei ka e wera mono papa hou. Tikanga, tutuki tenei e te ara iahiko ngohengohe-tīmatanga e pōturi te ara tuatahi o nāianei, me te ka taea mahi noa. Ki te mahue kore maimoatia, ka taea e te nāianei inrush whakaputa i te tihi teitei tohutohutia nāianei e pānga te ngaohiko whakaputa. Ki te ko te whakaaro nui tenei, tīpako i te supply ki tenei āhuatanga.

Undervoltage aukati:  mohiotia rite UVLO, huri i te reira i te supply runga ina tae te reira i te ngaohiko tāuru nui tiketike, me te tahuri atu te tokotoko, ki te taka te ngaohiko tāuru i raro i te tetahi uara. Kei te whakamahia i tēnei āhuatanga mō ngā kai whakahaere i te mana whaipainga me te mana pūhiko. A, no te whakahaeretia i te mana e hāngai ana pūhiko-UVLO mono te supply mana (me te te pūnaha) ki te ki te tukunga pākahiko kia nui e makaka reira ngaohiko tāuru o supply iti rawa tukua mahi pono.

Hiko Hototahi (EMC):  ngā tikanga hoahoa e whakaiti pokanoa hiko (EMI). I roto i te whakakā-aratau kai mana, kua tahuri te ngaohiko dc ki te tapatapahi i te pukangaru pākau i ranei. Ai tenei te supply mana ki te whakaputa kuiti-ropu haruru (EMI) i te faufaa o te auau whakawhitinga me tona hawarite whai pānga. Hei roto i te reo, me te whakaiti i ngā kaiwhakanao tukunga itehia i whakahaere ranei.

kaiwhakanao Power supply-whakaiti EMI radiation i karapotia te supply i roto i te pouaka whakarewa ranei rehu pani i te take ki te rauemi konganuku. Me hoki ngā kaiwhakanao ki te whakarongo ki te tahora ā o te supply me te waea e haere i roto i, me te i roto i o te supply, e taea te whakaputa reo.

Te nuinga o te pokanoa whakahaere i runga i te raina mana ko te hua o te whakawhitinga transistor putanga ranei rectifiers matua. Ki te ako te mana-tauwehe me te hoahoa hiko tika, hononga o te totohu wera, me te hoahoa tātari, ka taea e te kaihanga mana supply-whakaiti whakahaere pokanoa kia e taea te supply whakatutuki EMI faatia pokapū ture a kahore he utu tātari nui. tirohia ngā wā katoa ki te kite e tutuki te kaiwhakanao mana supply-te titauraa o te paerewa EMI ture.


wā Post: Apr-23-2018
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