bi boc hoi, nho di, dien tro tang len, lai cang nong hon va de dan den dut Tuoi tho den nay co 1 000 gio Den halogen Loai den nay thuc chat la den soi dot nhung lam bang thiiy tinh chiu nhiet hay thac[.]
bi boc hoi, nho di, dien tro tang len, lai cang nong hon va de dan den dut Tuoi tho den co 1.000 gio Den halogen Loai den thuc chat la den soi dot nhung lam bang thiiy tinh chiu nhiet hay thach anh, co thuoc loai hologen Khi day vonfram bi dot nong hay bay hoi, hoi vonfram lai quay lai bam vao day, cho nao day nho, nong thi hoi vonfram lai bam vao nhieu hon Nhd do, bong co the lam nhd va day tdc lam viec d nhiet cao, anh sang phat manh, cd den 9% nang luong dien tieu thu bien anh sang Tudi tho cua den cd the den 2.000 gid Mdt bong den halogen 60W cd sang tuong duong vdi bong den soi dot thudng 100W Bong thuong duoc dung d den trudc cua d td, den chieu Bong den rat ndng, cau tao phiic tap vat lieu cao cap hon so vdi bong den soi dot thudng, gia cao Den hoi natri La loai den phat sang nho hien tuong phdng dien khdng Cd hai loai: Den ap suat thap va den ap suat cao anh sang mau vang Nhd ldp oxyt indi nen nhiet khdng tda ngoai ma quay lai lam cho hoi natri de phat sang hon Nhd den natri cd phat sang cao tudi tho den 1.800 gid Den natri cho anh sang mau vang thich hop cho viec lam den dudng chieu sang cdng cdng, vi mau vang la mau mat nhay cam nhat Den hai natri dp suat cao (den cao dp) Den gdm cd dng thach anh nhd co hai dien cue d hai dau, ben cd hdn hop thuy ngan va natri Khi tao phdng dien giua hai cue, nhiet dng tang len dan lam cho dien tro cua dng giua hai cue giam, ddng dien qua dng lai tang, nhiet dng lai tang them lan nua Nhd bd tri chan luu nen ddng dien dng chi tang den mot miic gidi han du de ap suat hoi dng kha cao, anh sang phat kha manh Su phdng dien cua hdn hop thuy ngan va natri d ap suat cao cho anh sang vang xanh thich hop cho chieu sang quang trudng, duong xa d phd Den cao ap cd cau tao phuc tap, gia tien cao nhung rat sang va tuoi tho ben, co 2.000 gio Den huynh quang Den hai natri dp suat thap (den thap Den huynh quang bat dau duoc dung dp) tir nhung nam 1940, thudng goi la den Gdm bong thuy tinh d ben ngoai, mat dng vi cd cau tao la mot dng thiiy tinh han cua bong thuy tinh cd phu mdt kin, hai dau cd dien cue va dng cd ldp oxyt indi Ldp ngan can lam cho tro neon va vai giot thuy ngan Ben tia hdng ngoai (nhiet) phan xa lai cdn anh dng thuy tinh cd phu mot ldp sang nhin thay thi xuyen qua de dang Ben mdng bdt chat huynh quang Nhd hai bd bong thuy tinh cd mot ong hinh chir phan ben ngoai la facte va chan luu, cd the U co hai dien cue va nap tro nhu neon, moi cho ong neon phdng dien keo argom va mot it natri Tao dien kich theo thiiy ngan bay hoi len, tia tii ngoai thich cho hdn hop dng chu U phat Tia tu ngoai kich thich bdt phdng dien ban dau chi phat anh sang huynh quang d dng phat anh sang mau hdng, hdn hop hoi bi ndng len nhin thay Mau sac cua den huynh quang lam cho natri bien hoi natri Hoi phu thuoc chat luong ciia bot huynh natri bi phdng dien kich thich phat quang Khoa hoc va cong nghe Binh Duong Theo co che nen den huynh quang Cac loai den chieu sang trinh bay d rit it toa nhiet, khoang tu 15-25% nang tren moi loai den co uu nhuoc diem rieng luong dien tieu thu duoc bien anh Hieu biet duoc nguyen ly hoat dong ta de sang, tuoi tho co the den 10.000 gid dang phan tich, so sanh pham vi ung dung cua tung loai den Tuy nhien, co the noi Den huynh quang co nhuoc diem la sir dung dai tra den soi dot co nhieu cong kenh, co che moi cho phong dien nhuoc diem nhat va den compact co uu phuc tap, khong tang giam sang duoc diem nhat va tat md nhieu lan thi thi den chong Nhung co phai den compact co nhieu hong uu diem nhat hay khong? Trong phan tdi Den compact chimg ta se thay den LED gan day phat Ve ban chat, den compact la den huynh trien co nhung uu diem va khong co quang cai tien Ve hinh dang ngudi ta nhung nhuoc diem cua hau het cac den khong lam ong dai ma lam gon lai, noi tren hinh chu U hoac hinh xoan, co dui cai Den LED, loai den chieu sang hien hoac dui xoay nhu d bong den soi dot dai nhat Loai mdi, bien hien thi tacte va LED la ghep ba chu dau ciia cum tir chan luu duoc thay bang bo moi dien tu, gon nhe de gon vao dui den Cai tien tieng Anh Light Emiting Diode, nghia la co ban d den compact la chat lieu d ldp diot phat sang Phan chii yeu cua LED la huynh quang phii d ben dui den mot manh nho chat ban dan co pha tap Khong nhung chat lieu phat sang cao hon, chat cho tao duoc hai nhung lai phu nhieu ldp tan dung duoc mien: Mien P dan dien bang 16 (hat nhieu hon tia tir ngoai Mot den compact tai mang dien duong) va mien N dan dien 11W sang bang den soi dot 60W, tuoi tho bang dien tir (hat tai mang dien am), giua co 10.000 gid hai mien la ldp tiep xuc P-N Giong nhu Uu viet cua den compact rat ro, nen da diot (den hai cue chinh luu ban dan) dong hang chuc nam tren the gidi da co dien de dang di tir mien P sang mien N (di phong trao keu goi tiet kiem dien bang theo chieu thuan) chii khong di duoc theo each dimg den compact Tuy nhien den chieu nguoc lai Khi noi dien di theo compact co mot so nhuoc diem: Can dien chieu thuan 16 va dien tu bi day theo the cao de moi cho phong dien phat sang, hai chieu nguoc nhau, chimg gap d thdi gian tir tat chuyen sang sang lau, ldp tiep xiic P-N, to hop lai va phat anh khong thich hop cho viec thay doi dong sang Tiiy theo cac miic nang luong d hai ban dan tiep xiic, anh sang phat co mpt ngat nhieu lan mau xac dinh Trong den huynh quang cung nhu den Ban dau, vao nhung nam 1960 nguoi compact luon co thiiy ngan, it nhung ta mdi lam duoc LED hong ngoai va LED la chat de bay hoi, rat doc, de phan tan mau Dan dan lam duoc LED mau vao moi trudng gay nhiem duong ho vang va mau da cam Nhung LED rat hap O cac nude tien tien co yeu cau nha nho gon, chi to bang hat xanh, dimg may lam den huynh quang, den compact lam den chi thi rat tot vi gon it ton dien, phai thu hoi san pham den hong de tai cong suat chi co 0,01 W co hieu qua nhu che, chii yeu la thu lai thiiy ngan khong de den soi dot cong suat ldn hon vai tram phan tan S6 01.2011 lan Bat dau tir nhung nam 1970, hau het hien la dugc che tao theo each den mau chi thi, bao hieu d may moc thiet Tuy nhien nhieu each che tao LED trang bi dieu duoc thay the bang den LED mau khac dang duoc day manh nghien ciiu Nguoi ta nghT rang neu co each nao de nham lam cho each chieu sang bang LED co den LED phat anh sang trang de co nhieu uu viet han chieu sang thi vo cung co loi Nhung ve nguyen tac, anh sang d moi den LED phat su nhay tir hai miic nang luong nhat dinh d hai ban dan tiep xiic ciia den LED do, vi vay moi LED chi cho mot mau xac dinh Khong the tao nhieu miic nang luong gan de LED dong thai phat nhieu mau tao mau trang Nhung den nam 1993 Shuji Nakamuara da che tao duoc den LED cho anh sang mau xanh lam rat sang da he md nhieu each tir LED tao anh sang trang Mot so each chii yeu nhu sau: Diing ba LED mau do, luc, lam (RGB - red, green, blue), tron ba mau lai voi nhau, co dugc anh sang trang Theo danh gia ciia nhieu chuyen gia muc tieu ve hieu suat nang lugng ciia den chieu sang LED trang se dat dugc la 2003001m/W Kha nang va u-ng dung cua den LED hien Den LED mdu Doi vdi den mau, uu viet nhat ciia den LED la true tiep cho duoc mau mong muon, khong can lpc, rat tiet kiem dien Thi du trudc day den xanh, den do, den vang d nut giao thong ben la mpt bong den spi dot co 140W, ben ngoai la mpt cai hop kin cd khoet 16 trdn dat kinh lpc mau Bay gid thay bang each cac den LED true tiep cho mau xanh, mau dd, mau vang cdng suat chi 14W, nghTa la chi bang 1/10 cong suat cua den sgi dot Den LED lai de dang bat tat nhanh, nhieu lan khdng cham chap va mau hdng nhu den compact Diing LED mau lam co phii ldp phospho mong Anh sang mau lam LED phat kich thich phospho phat hai mau va luc Hai mau cpng vdi mau lam lai sau truyen qua ldp phosCac loai den hau, den xi nhan cua xe cho mau trang vi chinh la to hop td d Chau Au hien tren 80% la dung mau RGB cpng lai den LED, rat tiet kiem xang, hau nhu Diing LED phat tia tir ngoai, chieu khong phai thay den, ca ddi xe chi dung vao phospho de kich thich phat anh mpt ddi den Tuong tu, trang tri d cac sang trang tuong tu nhu d den compact Diing OLED tire la LED huu co Vi la chat hiru co nen de tao nhirng hat phat anh sang luc, anh sang va anh sang lam Tong hgp anh sang phat tir ba loai hat cho anh sang trang Hien each diing LED mau lam co phii ldp phospho de cho anh sang mau luc va mau cpng lai anh sang trang la don gian, cap, co hieu qua hon ca Hau het LED trang dang dimg Khoa hpc va cdng nghe Binh Duong j show - room ngudi ta diing den LED mau sac rue ro hem, rat it ton dien hon va dac biet la khong nong Hien nay, da bat dau phd bien loai den LED trang "tu tri" Vi du de thap sang dudng di vao ban dem, nguoi ta diing mot tam nhd pin mat troi ban lay dien Den LED trang nap vao acquy hoac sieu tu dien ban dem Hien hieu suat phat sang cua den dien chira d acquy d sieu tu duoc dung de LED trang moi xap xi bang hieu suat phat thap sang den LED trang Cach thap sang sang d den huynh quang compact nhung khdng can den dien ludi, khdng can co nhieu uu viet noi bat hon so vdi den noi vdi day dien thoai ngoan ngoeo tir compact ngoai den, it phai bao quan ky, chi lo bao Den LED khong co soi dot nen khong ve cho khdi mat lo bi dirt, khong co ben nen khong de bi suy thoai, khong co dien cue phong dien nen khong de bi hu hong Tuoi tho trung binh ciia den LED la 100.000 gid mudi lan hon tuoi tho ciia den compac Noi chung tuoi tho 100.000 gio co nghia la neu dung den 24 gio mot ngay, moi tuan dung thi bong den LED co the dimg 11 nam mdi hong Den chi co hai dien cue lam viec vdi dien the thap mot chieu co dudi 5V, chi can tao duoc dong dien nho chay qua la thap sang duoc den Do do, sir dung it nguy hiem, de dang sir dung vdi nhung nguon dien la acquy, la dien tai tao nhu pin mat trdi, pin nhiet dien, thuy dien nho, dien gio Dien ap neu bi thay doi it nhieu thi den sang it hay sang nhieu hon chir khong de bi hu hong, khong lam viec duoc nhu den compact Day la den ly tudng de chieu sang nhd pin mat trdi Den LED anh sang trang dung de chieu sang dudng phd Khdng nhu d cuoi the ky 20, sang den dau the ki 21 nguoi ta da che tao duoc den LED trang du loai cdng suat dap ling nhieu yeu cau chieu sang: Den LED trang de thap sang d gia dinh, d cong xuong, d den truoc cua xe td, den dau tau hda, thap sang den dudng Xet tirng bong den LED trang, thi cdng suat nhd nhat co 0,1 W; loai ldn nhat co 1W De cd dp sang mong mudn, each don gian nhat hien la ghep nhieu bong den LED trang lai Thi du de thay the den huynh quang 40W, cd the ghep 40 den LED trang 1W van tiet kiem duoc nhu cu nhung lau ben hon gap 10 lan, tinh tat ca cac mat thi chi phi thap hon A Den compact cung tiet kiem dien nhu den LED nhung cdng kenh de vo hon, dac biet la ngudn dien thap nhu acquy phai cd bo dien tir phirc tap de nang cao dien the mdi mdi, tao phdng dien duoc Bd phan rat hay hdng nhat la dien (Tien Vy, nguon: Tdi lieu hoi thao tiet the bi sut xuong Cac den chieu sang cam kiem ndng luong 28/02/2011 tai tay diing pin hay acquy may nam Binh Duong) gan day deu chuyen sang dung den LED trang S6 01.2011 M CAO CflAT tllflSG O O I i i S t l l C CONG SGflt TfiOSC PfiUC HJ 8(1 I G l f l i P CONG M J i H O l • flffl DAIfiOA1 T r o n g nhung nam qua, Binh Duong khong ngirng day manh va ung dung cong nghe thong tin (CNTT) moi lmh vuc hoat dong kinh te - xa hoi, doi ngu nhan luc CNTT khong ngirng tang ve so luong De bao dam nhu cau phat trien CNTT cho cac dem vi, doanh nghiep tren dia ban tinh rat can nguon nhan luc co chat lucmg, nhung hien thj truong cung ring nhan luc CNTT chua dap ling kip thoi "Thira lirtrng thieu chat" De irng dung cong nghe thong tin co hieu qua, ngoai viec dau tu, mua sam trang thiet bj cong nghe, ky thuat hien dai thi viec thu hut, dao tao va sir dung nhan luc nham khai thac toi da cac ling dung ve CNTT la yeu to co y nghia quyet dinh Trong nhung nam qua, Binh Duong da xay dung duoc mot doi ngu chuyen trach CNTT kha day du ve so luong, tir cap tinh den cap huyen Den cuoi nam 2010, tinh co 20 can bp lanh dao phu trach, 120 can bp chuyen trach, ban chuyen trach CNTT, 100% co quan cap tinh deu co can bp CNTT Nhiem vu chinh cua luc lupng la ho trp cong tac quan ly nha nuoc; tham muu quan ly, trien khai ling dung CNTT tai co quan, don vi minh Tuy kha du ve so lupng, nhung phan lon chua dupe dao tao bai ban ve CNTT nen viec thuc hien nhiem vu han che so voi yeu cau Tren dia ban tinh hien co 07 truong Dai hpc va Cao dang dao tao vh CNTT, 21 co so dao tao phi chinh quy ve CNTT, tren 10 co so dao tao tin hpc (A, B, ky thuat vien ) Sinh vien tot nghiep nganh CNTT tai cac truong tren dia ban la nguon cung i l i i cap nhan luc CNTT chii yeu cho cac to chiic, co quan, doanh nghiep tinh Hang nam, tren 120 cu nhan va 200 sinh vien cao dang tot nghiep tai cac truong noi tren Cac co so dao tao tin hpc A, B, ky thuat vien thu hut khoang 10.000 den 15.000 hpc vien Ngoai ra, mpt so khong nho hpc sinh ciia tinh theo hpc cac truong Dai hpc, Cao dang ve CNTT a Tp.Ho Chi Minh Trong thdi gian tdi, Dai hpc Quoc te mien Dong va Dai hpc Viet Diic co lien ket quoc te bat dau tuyen sinh, viec mang lai nhieu loi ich, khong chi cac kien thiic ve CNTT ma cac ky nang ve giao tiep, ngoai ngu nham day manh chat lupng dao tao, cung cap on dinh nguon nhan luc CNTT co trinh dp cao dap ung dupe nhu cau lam viec va ngoai nuoc Viec dao tao nhan lire CNTT nhung nam qua nhin chung da co phat trien nhieu va chat lupng dao tao dang dan dupe nang cao Tuy nhien, phan ldn sinh vien tot nghiep chua dap ling yeu cau cong viec tai cac cong ty phan mem, cong ty cung cap dich vu CNTT Cac sinh vien muon dupe tuyen dung, lam viec tai cac cong ty ldn hoac chuyen ve CNTT deu phai hpc them cac chiing chi quoc te hoac thong qua cac khoa dao tao npi bp cua chinh cong ty tuyen dung Ben canh do, cac chuong trinh dao tao chua doi mdi, chat lupng giang vien, giao vien chua cao, nguon nhan luc sau dao tao van chua dap ling dupe nhu cau thi truong, cong tac thu hut nhan luc chat lupng cao chua dem lai hieu qua, tinh ciing chua co trung tam nghien ciiu, dao Khoa hpc va cong nghe Binh Duong j ... nhung ta mdi lam duoc LED hong ngoai va LED la chat de bay hoi, rat doc, de phan tan mau Dan dan lam duoc LED mau vao moi trudng gay nhiem duong ho vang va mau da cam Nhung LED rat hap O cac nude... each che tao LED trang bi dieu duoc thay the bang den LED mau khac dang duoc day manh nghien ciiu Nguoi ta nghT rang neu co each nao de nham lam cho each chieu sang bang LED co den LED phat anh... moi den LED phat su nhay tir hai miic nang luong nhat dinh d hai ban dan tiep xiic ciia den LED do, vi vay moi LED chi cho mot mau xac dinh Khong the tao nhieu miic nang luong gan de LED dong