mofuta o mocha oa lisebelisoa tsa phepelo ea motlakase oa motlakase - phepelo ea motlakase e phahameng haholo. E kopanya melemo ea boreleli ba waveform ea li-silicon rectifiers le bonolo ba taolo ea voltage ea li-rectifiers tse laoloang ke silicon. E na le ts'ebetso e phahameng ka ho fetisisa ea hona joale (ho fihla ho 90% kapa ho feta) le molumo o monyenyane ka ho fetisisa. Ke tokiso e tšepisang. Theknoloji ea tlhahiso ea thepa e rarolotse bothata ba matla, 'me matla a matla a ho fetola matla a matla ho tloha ho likete tsa amps ho ea ho mashome a likete a amps a kene ka mokhoa o sebetsang oa tlhahiso.
E lokisa ka kotloloho le ho sefa marang-rang a matla a AC ka filthara ea EMI anti-electromagnetic interference line, e fetolela voltage ea DC hore e be maqhubu a lisekoere a maqhubu a mashome kapa makholo a kHz ka converter, e arola le ho fokotsa motlakase ka maqhubu a phahameng. transformer, 'me ka mor'a moo ka matla a phahameng a Frequency filtering DC voltage. Ka mor'a ho etsa sampole, ho bapisa, ho hōlisa le ho laola, ho khanna potoloho, tekanyo ea mosebetsi oa tube ea matla ka converter e laoloa ho fumana motlakase o tsitsitseng oa tlhahiso (kapa tlhahiso ea hona joale).
Tube ea tokiso ea "high-frequency switching rectifier" e sebetsa maemong a ho fetoha, tahlehelo ea matla e nyane, ts'ebetso e ka fihla ho 75% ho isa ho 90%, molumo o nyane, boima bo bobebe, 'me ho nepahala le coefficient ea ripple e betere. ho feta silicon rectifier, e ka bang lethathamong le felletseng la tlhahiso. Finyella ho nepahala ho hlokehang ka tlhahiso. E na le bokhoni ba ho itšireletsa 'me e ka qala le ho emisa ka mokhoa o ikemetseng tlas'a moroalo. E ka hokahanngoa habonolo le komporo, e tlisang boiketlo bo boholo ho tlhahiso ea boiketsetso mme e sebelisoa haholo indastering ea ho roala ea PCB.
Likaroloana
U sebelisa ts'ebetso ea ho laola nako, tlhophiso e bonolo ebile e bonolo, 'me nako ea ts'ebetso ea polarity e ntle le e mpe ea hona joale e ka beoa ka mokhoa o ikhethileng ho latela litlhoko tsa ts'ebetso ea plating.
E na le libaka tse tharo tse sebetsang tsa ho feto-fetoha ha potoloho ea othomathike, e ntle le e mpe, le ho kheloha, 'me e ka fetola polarity ea tlhahiso ea hona joale.
Bokhabane ba periodic commutation pulse plating
1 Reverse pulse current e ntlafatsa kabo ea botenya ea koae, botenya ba ho roala bo lekana, 'me boemo bo botle.
2 Ho qhibiliha ha anode ea mokokotlo o ka morao ho etsa hore ho hlophisoa ha li-ion tsa tšepe ka holim'a cathode ho phahame ka potlako, e leng se loketseng ho sebelisoa ha sekhahla se phahameng sa maqhubu nakong ea potoloho e latelang ea cathode, 'me sekhahla se phahameng sa pulse hona joale se etsa hore lebelo la ho thehoa. nucleus ea kristale ka potlako ho feta tekanyo ea ho hōla ha kristale, kahoo Thepa e teteaneng ebile e khanyang, e nang le porosity e tlaase.
3. Reverse pulse anode stripping e fokotsa haholo ho khomarela litšila tsa lintho tse phelang (ho kenyeletsoa le brightener) ka ho roala, kahoo ho roala ho na le bohloeki bo phahameng le ho hanyetsa ka matla ho fetoha ha mebala, e leng ntho e hlahelletseng ka ho khetheha ho plating ea silevera ea cyanide.
4. The reverse pulse hona joale oxidizes ea haedrojene e nang le barbotage, e ka felisa hydrogen embrittlement (jwalo ka pulse reverse ka tlosa co-deposited hydrogen nakong electrodeposition ea palladium) kapa fokotsa khatello ea kelello ka hare.
5. Nako ea nako ea morao-rao ea pulse e boloka bokaholimo ba karolo e pentiloeng e le boemong bo sebetsang ka linako tsohle, e le hore ho ka fumanoa lera la plating le nang le matla a ho kopanya hantle.
6. Reverse pulse e thusa ho fokotsa botenya ba sebele ba lera la phallo le ho ntlafatsa katleho ea hona joale ea cathode. Ka hona, li-parameter tse nepahetseng tsa pulse li tla potlakisa le ho feta lebelo la deposition ea ho roala.
7 Ka har'a sistimi e sa lumelleng kapa e nyane ea li-additives, plating e habeli ea pulse e ka fumana seaparo se setle, se boreleli le se boreleli.
Ka lebaka leo, matšoao a ts'ebetso ea ho roala joalo ka ho hanyetsa mocheso, ho hanyetsa ho roala, ho cheselletsa, ho tiea, ho hanyetsa kutu, conductivity, ho hanyetsa ho fetoha ha mmala, le ho boreleli ho eketsehile ka mokhoa o tsotehang, 'me e ka pholosa haholo litšepe tse sa tloaelehang le tsa bohlokoa (hoo e ka bang 20% -50). %) le ho boloka li-additives (tse kang Bright silver cyanide plating ke hoo e ka bang 50% -80%).