los ntawm Admin / 11 Oct 22 /0Cov lus pom LAN nruab nrab nkag mus tswj txoj kev Kev nkag mus thiab tswj cov khoos phis tawj sib txawv li cas los ntawm kev tshaj tawm hauv LAN yog nkag siab ua ntej raws li hauv qab no. Ib lub sij hawm ntev dhau los, Ethernet tau siv los txuas tag nrho cov kab ntawm cov khoos phis tawj hauv tsev mus rau lub npav kom paub txog kev sib txuas lus ntawm cov khoos phis tawj. Thaum siv txoj kev no los xa cov ntaub ntawv, koj tsis xav tau ... Nyeem ntxiv los ntawm Admin / 10 Oct 22 /0Cov lus pom Kub, Rate, Voltage, Transmitter, thiab Receiver ntawm Optical Module 1 、 Kev ua haujlwm kub Kev ua haujlwm kub ntawm qhov kho qhov muag module. Ntawm no, qhov kub thiab txias yog hais txog lub vaj tsev kub. Muaj peb qhov kev ua haujlwm kub ntawm qhov kho qhov muag module, kev lag luam kub: 0-70 ℃; Ua haujlwm kub: -40 ℃ - 85 ℃; Kuj tseem muaj exp... Nyeem ntxiv los ntawm Admin / 09 Oct 22 /0Cov lus pom Diode yog dab tsi? [Plaub] Lub Diode yog tsim los ntawm PN kev sib tshuam, thiab lub photodiode tuaj yeem hloov kho qhov muag teeb liab mus rau hauv cov teeb liab hluav taws xob, raws li qhia hauv qab no: Feem ntau, covalent daim ntawv cog lus yog ionized thaum lub PN hlws ris yog illuminated nrog lub teeb. Qhov no tsim lub qhov thiab electron khub. Lub photocurrent yog generated vim t ... Nyeem ntxiv los ntawm Admin / 08 Oct 22 /0Cov lus pom Kev nkag siab ua ntej ntawm LAN LAN yog qhov nrov tshaj plaws uas peb siv niaj hnub no. LAN yog dab tsi? Local Area Network (LAN) yog hais txog ib pawg ntawm cov khoos phis tawj sib txuas los ntawm ntau lub khoos phis tawj hauv ib cheeb tsam uas siv cov channel tshaj tawm. Qhov ntau muaj nyob rau hauv cheeb tsam no, cov khoom siv ntau dua tuaj yeem sib txuas lus. Thiab tsuas yog cov ... Nyeem ntxiv los ntawm Admin / 29 Sep 22 /0Cov lus pom Ethernet hloov pauv yog dab tsi thiab nws ua haujlwm li cas? Nrog rau txoj kev loj hlob sai ntawm cov khoos phis tawj thiab lawv cov kev sib txuas thev naus laus zis (tseem hu ua "network technology"), Ethernet tau dhau los ua qhov luv luv ntawm ob-txheej khoos phis tawj network nrog qhov nkag siab tshaj plaws kom deb li deb. Qhov tseem ceeb ntawm Ethernet yog Ethernet hloov. Phau ntawv thiab ... Nyeem ntxiv los ntawm Admin / 28 Sep 22 /0Cov lus pom VCSEL laser yog dab tsi? VCSEL, uas yog hu ua Vertical Cavity Surface Emitting Laser tag nrho, yog ib hom semiconductor laser. Tam sim no, VCSEL feem ntau yog raws li GaAs semiconductors, thiab cov emission wavelength feem ntau yog nyob rau hauv infrared yoj band. Xyoo 1977, xibfwb Ika Kenichi ntawm Tokyo University of Technology fir ... Nyeem ntxiv << < Ua ntej22232425262728Tom ntej no>>> Nplooj 25 / 74