Intangiriro yo guhinduranya amashanyarazi adapter ya tekinoroji ya TV

1 Intangiriro;

Guhindura amashanyarazi bifite ibyiza bigaragara nko gukoresha ingufu nke, gukora neza nubunini buto. Yakoreshejwe cyane mubicuruzwa byamashanyarazi nibikoresho bya elegitoroniki. Ukurikije ibisohoka voltage ihindura uburyo bwo kugenzura imiyoboro yumuzunguruko, guhinduranya amashanyarazi birashobora kugabanywa muburyo butatu: ubugari bwimisemburo (PWM), impiswi yumubyigano (PFM) hamwe no guhindura igipimo cya pulse (PWM). Ukurikije uburyo bwa trigger, guhinduranya amashanyarazi birashobora kugabanywa mubwoko bushimishije hamwe nubundi bwoko bushimishije, Guhindura amashanyarazi adapter yasobanuwe muriyi ngingo ni ubugari bwa pulse (PWM). Ni amashanyarazi ashimishije yo gutanga amashanyarazi, asohora ingufu za 12V DC yagenzuwe na voltage ikunze gukoreshwa mubicuruzwa byamashanyarazi nibikoresho bya elegitoroniki, kandi ibyasohotse byapimwe ni 6A. Irakwiranye na DC yinjiza amashanyarazi ya LCD TV muri santimetero 32.

2 explanation Ibisobanuro bya tekiniki yumuzunguruko wo guhinduranya amashanyarazi;

Disiki ya chip ob2269 ikoreshwa muguhindura amashanyarazi yasobanuwe muriyi ngingo ifata gahunda idasanzwe yo gushushanya, ni uko sisitemu yo gutanga amashanyarazi ifite imikorere ihenze kandi ishobora kuzuza ibisabwa na rubanda.

Ob2269 ifata imiterere yuburyo bugezweho kandi ifite ibimenyetso bikurikira;

Consumption gukoresha ingufu nke zihagarara: igishushanyo mbonera cyakazi giciriritse cyigihe gito ntigishobora gutuma sisitemu yose yoroha kubona ibyifuzo byanyuma byikigo mpuzamahanga gishinzwe ingufu nta mutwaro.

Operation urusaku rwubusa: urusaku rwamajwi ntiruzagaragara munsi yumutwaro woroheje nuburemere bwuzuye. Igishushanyo mbonera cya sisitemu irashobora gutuma sisitemu ikora ituje muri leta iyo ari yo yose ikora.

Intangiriro yo gutangira: VIN / VDD itangira iriho ni hasi ya 4ua, irashobora kugabanya neza igihombo cya sisitemu yo gutangira umuzingo no kugabanya igihe cyo gutangira sisitemu.

Current hasi yimirimo ikora: icyerekezo cyakazi ni hafi 2.3ma, ishobora kugabanya neza igihombo cya sisitemu no kunoza imikorere ya sisitemu.

Yubatswe mu ndishyi za OCP: yubatswe muri OCP imikorere yindishyi ituma OCP umurongo wa sisitemu ikunda kuba iringaniye mumashanyarazi yose itarinze kongera ikiguzi, kugirango tunoze imikorere yikiguzi cya sisitemu.

Function imikorere yo gukingira amajwi: ifite ibikorwa byo gukingira birenze urugero (OVP), hejuru yumurimo wo kurinda ubushyuhe (OTP), ibikorwa byo gukingira amashanyarazi (UVLO) hamwe n’ibikorwa byo kurinda ibicuruzwa birenze urugero (OLP), bihujwe n’ibikorwa byo kurinda amajwi.

Drive MOSFET yoroheje ya disiki: irashobora kunoza neza EMI ya sisitemu.

2269 ibiranga sisitemu yubatswe: irashobora kugabanya neza EMI no kugabanya EMI.

3 diagram Igishushanyo mbonera cy'amashanyarazi cyo guhindura amashanyarazi;