Cov txheej txheem:

Dab tsi yog cov xov hlau ntsuab thiab dawb hauv USB cable?
Dab tsi yog cov xov hlau ntsuab thiab dawb hauv USB cable?

Video: Dab tsi yog cov xov hlau ntsuab thiab dawb hauv USB cable?

Video: Dab tsi yog cov xov hlau ntsuab thiab dawb hauv USB cable?
Video: Nkauj mos ab ib txhia tub sab 7/25/2018 2024, Kaum ib hlis
Anonim

Txiv kab ntxwv yog qhov zoo, nrog 5 volts ntawm lub zog nyob rau hauv DC (ncaj qha tam sim no). Dawb qhia txog av hlau (lub ntsiab lus "negative" hlau ). Blue yog qhov "tsis zoo" hlau rau cov ntaub ntawv. Ntsuab yog cov ntaub ntawv "positive". hlau.

Yog li ntawd, dab tsi yog cov xov hlau hauv USB cable?

Hauv ib lub USB cable yog 4 xov hlau,

  • Dawb thiab ntsuab yog rau cov ntaub ntawv.
  • Cov liab thiab dub yog 5V thiab nqa lub zog rau them, cov no txiav txim siab them ceev.

Ib yam li ntawd, qhov chaw nres nkoj USB ntsuab txhais li cas? Cov xim no qhia tias cov connector ua tsis siv hluav taws xob thaum pw tsaug zog lossis standby hom. Nyob rau hauv lub laptop lossis desktop computers lawv yog qhov zoo rau kev them nyiaj sab nraud xws li smartphones. Nws cov lus qhia tshwj xeeb tuaj yeem yog ib qho ntawm cov saum toj no, yog li xyuas koj lub khoos phis tawj lossis cov ntaub ntawv ntaus ntawv rau qhov tseeb.

Tsis tas li ntawd, koj yuav ua li cas txuas 4 xov hlau rau 2 xov hlau?

Thawj qhov kev xaiv yog siv cov xim dub hlau ntawm 12-3 cable raws li qhov kub hlau . Txuas cov dub cov hlau ntawm ob leeg kab ua ke, thiab txuas hom dawb cov hlau ua ke. Cap lub liab hlau thiab cia nws nyob rau hauv lub junction box. Muab cov yas twist lub kaus mom rau txhua qhov sib txuas.

Dab tsi xim xov hlau nyob hauv Iphone charger?

Dawb yog cov ntaub ntawv cable uas nyob rau hauv qhov zoo volts. Ntsuab kuj yog cov ntaub ntawv cable tab sis nyob nrog qhov tsis zoo. Liab kub.

Pom zoo: