Gabatarwar fasahar kewaya adaftar wutar lantarki don TV

1, Gabatarwa;

Canja wutar lantarki yana da fa'idodi na fili kamar ƙarancin wutar lantarki, babban inganci da ƙaramin ƙara. An yi amfani da shi sosai a cikin kayan lantarki da kayan lantarki. A cewar fitowar wutar lantarki tana tabbatar da yanayin sarrafawa guda uku: Za'a iya raba sauya wutar lantarki zuwa uku: PWM), bugun sama mai tsayi (pwm) da bugun kirji (pwm) da bugun sama. Dangane da yanayin faɗakarwa, ana iya raba wutar lantarki zuwa nau'in jin daɗin kai da sauran nau'ikan jin daɗi, Adaftar wutar lantarki da aka bayyana a cikin wannan labarin shine pulse width modulation (PWM). Wutar wutar lantarki ce mai ban sha'awa, wacce ke fitar da ingantaccen ƙarfin lantarki na 12V DC wanda aka saba amfani da shi a cikin samfuran lantarki da kayan lantarki, kuma ƙimar fitarwa na yanzu shine 6A. Ya dace da shigar da wutar lantarki ta DC na LCD TV a cikin inci 32.

2, Bayanin fasaha na da'irar tuki na adaftar wutar lantarki;

The drive guntu ob2269 da aka yi amfani da shi a cikin sauya wutar lantarki da aka bayyana a cikin wannan labarin ya ɗauki tsarin ƙira na musamman, wanda shine tsarin samar da wutar lantarki yana da babban farashi kuma yana iya biyan bukatun talakawa.

Ob2269 yana ɗaukar ƙirar yanayin halin yanzu na gargajiya kuma yana da halaye masu zuwa;

▲ ƙarancin amfani da wutar lantarki: ƙirar ƙarancin wutar lantarki na tsaka-tsakin yanayin aiki ba kawai zai iya sauƙaƙe tsarin duka don aiwatar da sabbin shawarwarin Hukumar Makamashi ta Duniya ba tare da ɗaukar nauyi ba.

▲ aiki kyauta: sautin sauti ba zai bayyana a ƙarƙashin nauyi mai sauƙi da cikakken kaya ba. Tsarin tsarin da aka inganta zai iya sa tsarin ya yi aiki a hankali a kowace jiha mai aiki.

▲ ƙananan farawa na yanzu: VIN / VDD farawa a halin yanzu yana da ƙasa kamar 4ua, wanda zai iya rage asarar tsarin farawa da kuma rage lokacin farawa na tsarin.

▲ ƙananan aiki na yanzu: halin yanzu yana aiki kusan 2.3ma, wanda zai iya rage asarar tsarin yadda ya kamata kuma inganta ingantaccen tsarin.

▲ gina a cikin OCP diyya: ginannen OCP ramuwa aiki sa OCP kwana na tsarin yakan zama lebur a cikin dukan ƙarfin lantarki kewayon ba tare da kara farashin, don inganta kudin aiki na tsarin.

▲ aikin kariyar sauti: yana da aikin kariyar overvoltage (OVP), sama da aikin kariyar zafin jiki (OTP), aikin kariya mara ƙarfi (UVLO) da aikin kariyar fitarwa (OLP), haɗe da aikin kariyar sauti.

▲ MOSFET soft drive: yana iya inganta EMI na tsarin yadda ya kamata.

2269 fasali na tsarin da aka gina: yana iya rage EMI yadda ya kamata kuma ya rage EMI.

3, Electric tsarin zane zane na sauyawa ikon adaftan;