Shintsha ukumelana nezidingo zamandla kagesi nokuvuza
Lapho i-voltage yokufaka kanye neyokukhipha kokushintshwa kwamandla kweqa ama-36V AC no-42V DC, inkinga yokubanjwa ngogesi idinga ukucatshangelwa. Imithethonqubo yezokuphepha: ukuvuza phakathi kwanoma yiziphi izingxenye ezimbili ezifinyelelekayo noma enye ingxenye etholakalayo kanye nesigxobo esisodwa samandla kagesi ngeke kweqe ku-0.7map noma ku-DC 2mA.
Lapho i-voltage yokufaka ingu-220V wokushintsha ukunikezwa kwamandla, ibanga le-creepage phakathi komhlaba obandayo noshisayo ngeke libe ngaphansi kuka-6mm, futhi isikhala phakathi kwemigqa yetheku kuzo zombili izinhlangothi kumele sibe sikhulu kuno-3mm.
Amandla amelana namandla aphakathi kwezigaba zokuqala zenguquko ezishintshayo kuzoba yi-3000V AC, futhi ukuvuza okukhona kuzoba yi-10mA. Okwamanje ukuvuza kufanele kube ngaphansi kuka-10mA ngemuva kokuhlolwa komzuzu owodwa
Ukuphela kokufakwa kokushintshwa kwamandla kuzobekezelela amandla okungena emhlabathini (igobolondo) ene-AC 1500V, kusethwe ukuvuza kwamanje njenge-10mA, futhi kuqhutshwe ukuhlolwa kwamandla kagesi okomzuzu owodwa, kanti amandla okuvuza kufanele abe ngaphansi kuka-1mA.
I-DC 500V isetshenziselwa ukumelana namandla okuphela kokuphela kokunikezwa kwamandla okuya phansi (igobolondo), futhi ukuvuza kwamanje kusethwe njenge-10mA. Yenza isivivinyo sokumelana namandla kagesi okomzuzu owodwa, futhi okuvuza manje kufanele kube ngaphansi kuka-1mA.
Izidingo zebanga lokushintshela eliphephile
Ibanga lokuphepha phakathi kohlangothi nohlangothi lwesibili lwale migqa emibili: 6mm, kanye no-1mm, islotting nayo kufanele ibe ngu-4.5mm.
Ibanga lokuphepha phakathi kohlangothi nohlangothi lwesibili emgqeni wesithathu: 6mm, kanye no-1mm, islotting nayo kufanele ibe ngu-4.5mm.
Ukuphepha ibanga phakathi kwamacici amabili wethusi we-fuse> 2.5mm. Ngeza u-1mm, bese ukubekwa kabusha kube yi-1.5mm.
Ibanga eliphakathi kwe-LN, l-gnd ne-n-gnd likhulu kune-3.5mm.
Isikhala sesihlungi se-capacitor pin isikhala> 4mm.
Ukuphepha ibanga phakathi kwezigaba zokuqala> 6mm.
Ukushintsha izidingo zokuphakelwa kwentambo ye-PCB
Phakathi ucwecwe zethusi nethusi ucwecwe: 0.5mm
Phakathi kwe-foil yethusi nokuhlanganiswa kwe-solder: 0.75mm
Phakathi kwamajoyini we-solder: 1.0mm
Phakathi kocwecwe lwethusi nomugqa wepuleti: 0.25mm
Phakathi komphetho wembobo nembobo yomgodi: 1.0mm
Phakathi komphetho wembobo nomugqa wepuleti: 1.0mm
Ububanzi bomugqa we-Copper foil> 0.3mm.
Ijika le-45 °
Isikhala esilinganayo siyadingeka ezintanjeni phakathi kwemigqa efanayo.
Izidingo zokuphepha zokushintsha ukunikezwa kwamandla
Thola i-fuse edingwa yimithetho yokuphepha kusuka ezingxenyeni zemithethonqubo yokuphepha, futhi ibanga le-creepage phakathi kwamapayipi amabili ngu-> 3.0mm (min). Uma kwenzeka ukujikeleza kwesikhashana ngemuva kwesigaba, ama-capacitors X kanye no-Y bazoba kumthethonqubo wokuphepha. Ibheka ukumelana namandla kagesi namandla wamanje avuzayo. Emvelweni oshisa kakhulu, amandla okuvuza avumayo abe ngaphansi kuka-0.7ma, leyo yemishini esebenza endaweni epholile izoba ngaphansi kuka-0.35ma, futhi amandla ajwayelekile ngeke abe ngaphezu kuka-4700pf. Ukumelana nokukhishwa kuzongezwa ku-x capacitor ngomthamo> 0.1uF. Ngemuva kokuthi imishini yokusebenza ejwayelekile icishiwe, i-voltage phakathi kwamapulagi ngeke ibe nkulu kune-42V ngaphakathi kwe-1s.
Ukushintsha izidingo zokuvikelwa kokunikezwa kwamandla
Lapho inani eliphelele lokukhipha amandla okushintsha ugesi likhulu kune-15W, kuzokwenziwa ukuhlolwa kwesifunda okufushane.
Lapho ukuphela okukhishwayo kufinyezwa okwesikhashana, ngeke kube khona ukushisa okukhulu noma umlilo esifundeni, noma isikhathi somlilo siyoba phakathi kuka-3.
Lapho ibanga phakathi kwemigqa eseduze lingaphansi kuka-0.2mm, lingathathwa njengesiyingi esifushane.
Isivivinyo sesifunda esifushane senzelwe i-electrolytic capacitor. Ngalesi sikhathi, ngoba i-electrolytic capacitor kulula ukwehluleka, kuzonakwa amadivayisi ngesikhathi sokuhlolwa kwesifunda okufushane ukuvimbela umlilo.
Izinsimbi ezimbili ezinezakhiwo ezahlukahlukene azinakusetshenziswa njengezixhumi ngoba zizokhiqiza ukubola kukagesi.
Indawo yokuxhumana phakathi kwejoyini le-solder kanye nephini lezinto kufanele libe likhulu kunendawo enqamulelayo yephini lengxenye. Ngaphandle kwalokho, kubhekwa njengokushisela okungalungile.
Idivayisi ethinta ukushintshwa kwamandla – i-electrolytic capacitor
I-Electrolytic capacitor iyidivayisi engaphephile ekushintsheni ukunikezwa kwamandla futhi inomthelela esikhathini esinqunyiwe phakathi kokuhluleka (MBTF) kokushintsha ukunikezwa kwamandla.
Ngemuva kokuthi i-electrolytic capacitor isetshenziswe isikhathi esithile, i-capacitance izokwehla futhi amandla we-ripple azokhuphuka, ngakho-ke kulula ukushisa nokuhluleka.
Lapho i-high-power electrolytic capacitor yehluleka ukukhiqiza ukushisa, imvamisa izodala ukuqhuma. Ngakho-ke, i-electrolytic capacitor enobubanzi obukhulu kuno-10mm izoba nomsebenzi wokuqhuma. Okwe-capacitor ye-electrolytic enomsebenzi wokuqhuma-ukuqhuma, kuvulwa inkatho yesiphambano phezulu kwegobolondo le-capacitor, bese kusala imbobo yokukhipha ezansi kwephini.
Impilo yesevisi ye-capacitor inqunywa kakhulu ukushisa kwangaphakathi kwe-capacitor, futhi ukukhuphuka kwezinga lokushisa kwe-capacitor kuhlotshaniswa ikakhulu namandla we-ripple yamanje ne-ripple voltage. Ngakho-ke, imingcele yamandla kagesi amagebhugebhu wamanje enamakhompiyutha anikezwe ngama-capacitor ajwayelekile e-electrolytic yizilinganiso zamanje ezixegayo ngaphansi kwezimo zokushisa okusebenzayo okuthile (85 ℃ noma 105 ℃) nempilo yesevisi ethile (amahora angama-2000), okungukuthi, ngaphansi kwesimo sokuxakaniseka i-voltage yamanje ne-ripple, impilo yesevisi ye-electrolytic capacitor ngamahora angama-2000 kuphela. Lapho impilo yensizakalo ye-capacitor idingeka ukuthi ibe ngaphezu kwamahora we-2000, impilo yensiza ye-capacitor izokwakhiwa ngokuya ngefomula elandelayo.