Unoziva here chikonzero chekudonha ikozvino mumotokari yemagetsi yekuchaja mapile?

Kuchaja mota yemagetsipile leakage ikozvino inokamurwa kuita mhando ina, dzinoti: semiconductor chikamu chekuvuza ikozvino, simba rekudonha ikozvino, capacitor leakage ikozvino uye sefa kuvuza ikozvino.

1. Leakage ikozvino ye semiconductor components

Iyo idiki chaizvo ikozvino inoyerera nepakati pePN junction kana yagurwa.DS inorerekera mberi, GS iri reverse yakarerekera, uye mushure mekunge conductive chiteshi chavhurwa, ikozvino ichayerera kubva kuD kuenda kuS. Asi chokwadi, nekuda kwekuvapo kwemaerekitironi emahara, maerekitironi emahara anonamirwa kuSIO2 neN +, zvichikonzera kuvuza. ikozvino yeDS.

2. Simba rekudonha ikozvino

Kuti uderedze kupindira mumagetsi ekuchinja, zvinoenderana nechiyero chenyika, EMI sefa redunhu rinofanirwa kupihwa.Nekuda kwehukama hweiyo EMI dunhu, kune diki ikozvino pasi mushure meiyo switching magetsi yakabatana kune mains, inova iyo yekudonha ikozvino.Kana iyo isina kudzika pasi, goko rekombuta rinenge riine voltage ye110 volts pasi, uye inozonzwa kupera simba paunoibata nemaoko ako, uye ichakanganisawo basa rekombuta.

3. Capacitor leakage ikozvino

Iyo capacitor medium haigone kuve isiri-conductive;kana DC voltage ichiiswa kune capacitor, iyo capacitor ichava nekudonha ikozvino.Kana iyo yekudonha ikozvino yakakura kwazvo, iyo capacitor ichakuvadzwa nekupisa.Kuwedzera kune electrolytic capacitors, iyo inodonha yemamwe ma capacitor idiki zvakanyanya, saka iyo insulation yekudzivirira parameter inoshandiswa kumiririra kuita kwavo kuvharisa, nepo electrolytic capacitor ine hombe yekuvuza ikozvino, saka iyo leakage ikozvino inoshandiswa kumiririra mashandiro avo ekudzivirira (proportional). kusvika pakugona).Kana iyo yakatemerwa DC inoshanda voltage inoiswa kune capacitor, ichaonekwa kuti shanduko yekuchaja ikozvino inotanga kuve yakakura, uye inoderera nekufamba kwenguva.Apo inosvika pahumwe ukoshi hwokupedzisira, inosvika mugariro wakaterama.Iyi yekupedzisira kukosha ikozvino inonzi leakage current.i=kcu(ua);uko k ndiko kudonha kwazvino kunogara, iyo unit iri μa(v:μf)

4. Sefa kuvuza ikozvino

Ikozvino kuvuza kwesefa yemagetsi inotsanangurwa se: ikozvino kubva kune sefa imba kune chero kumagumo eiyo AC inopinda mutsetse pasi peyakayerwa AC voltage.Kana ese madoko esefa akavharirwa zvachose kubva mudzimba, kukosha kweiyo kuvuza ikozvino kunoenderana nekudonha ikozvino kweiyo common mode capacitor CY, ndiko kuti, inonyanya kuenderana nekugona kweCY.Nekuda kwehukuru hwekudonha kweiyo sefa, iyo inosanganisira kuchengetedzwa kwemunhu, nyika dzese pasirese dzine miitiro yakasimba pazviri.Kune 220V/50Hz AC magetsi emagetsi, iyo yekuvuza ikozvino yeruzha sefa inowanzodikanwa kuve isingasviki 1mA.