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Nguon dien va he thong am thanh

Loc dien la thiet bi it khi duoc dan choi am thanh quan tam, nhung trong thuc te, loc dien co tam anh huong rat lon den chat luong am thanh, hinh anh cua mot he thong. Cac thiet bi am thanh du co cao cap the nao ma nguon dien on ap so sai thi kha nang trinh dien cung bi giam di nhieu.

Cau tao ben trong loc dien.

Cau tao ben trong loc dien.

Nguon dien luoi tu cac nha may phat dien truyen tai qua cac tram bien the (tang the, giam the) moi den cac ho su dung. Do mang luoi dien hien chua on dinh nen thuong co hien tuong nhieu dien, hieu dien the khong du 220 V, dong dien tang giam dot ngot. Viec nay se lam cong suat ampli giam, lam anh huong den chat luong hinh anh va gay meo tieng, lam he thong trinh dien kem linh hoat. Ngoai ra, hien tuong nay con lam giam tuoi tho cua thiet bi.

Viec dau tu mot loc dien power conditioner la dieu can thiet de dam bao trinh dien cua he thong am thanh khong bi gian doan va dat hieu qua tot nhat. Khong nhung vay, day tin hieu phai co chat luong tot de giu duoc sac thai tu nguon den ampli roi ra loa. Dong thoi, cung phai co cap nguon chuyen dung voi phich cam ba chan chat luong tot, tranh viec tiep xuc khong chat giua dau cam voi phich cam dan den hien tuong phong tia lua dien hay phich cam bi chay nhua.

*Ampli den Cayin/Spark A88-T

Bo loc dien Accuphase Clean Power Supply PS-1200 duoc gioi choi am thanh danh gia kha cao. Be ngoai PS-1200 co hinh dang cua mot chiec Power ban dan thuc thu. Than may to day, rat an tuong voi mau vang champagne dac trung cua Accuphase. Cong tac nguon thiet ke don gian phia truoc va mot dong ho tron mat trang ma vang dat o giua may. Ben phai la mot num dieu khien xoay theo tung nac, nut day dung de thay doi chuc nang hien thi cua dong ho mat may.

Dong ho co the hien thi o 5 dang: cong suat tieu thu, hieu dien the dau vao, hieu dien the dau ra, meo va nhieu cua dong dien nguon, meo va nhieu cua dong dien sau khi duoc loc boi PS-1200 . Trong cac dang tren, hien thi cong suat tieu thu giup hien thi cong suat tieu thu ro rang khi tang giam volume hay trong tung doan nhac khac nhau trong mot bai hat. Khi cong suat tieu thu vuot nguong cho phep, den dong ho se sang ruc de canh bao.

Accuphase

Accuphase Clean Power Supply PS-1200.

PS-1200 cung cap nguon nang luong 1.500 VA cho 7 dau cam (2 dau mat truoc, 5 dau mat sau). Ben trong PS-1200 la mot bien the tron cuc lon va 4 tu dien cung kha lon, chiem gan het ruot may. Phan con lai la bo canh giai nhiet cho 40 so (20 so o mat tren va 20 con o mat duoi may). Power Conditioner PS-1200 su dung ky thuat "nan" song dien Waveform Shaping Technology giup tao do on dinh cho nguon dien. Song dien cua nguon xoay chieu AC qua cac mach dien tich cuc se duoc nan lai thanh song hinh sin tron tru khong nhieu va hoan toan on dinh. Tang Output cua PS-1200 su dung nhung ban dan (so) chiu duoc dong dien kha cao len den 15A. 40 ban dan nay ket noi thanh 20 cap song song kieu day keo tao nen mot dong dien manh va hoan hao.

Cac thiet bi duoc noi voi PS-1200 duoc dam bao nguon cung cap mot cach tot nhat. Khi co cac su co ve dien xay ra, ro-le tu dong duoc tich hop trong cong tac nguon se dong tat ngay lap tuc. Ngoai ra, khi nhiet do ben trong cua bien the vuot qua 110 do C, cong tac nguon cung tu dong dong tat. Bien the nay cung dong vai tro quan trong trong loc dien. Cac bien the thong thuong co hinh vuong, trong khi do, bien the cua PS-1200 co hinh xuyen, ben trong su dung day dong co lon cho ra mot dong dien dat hieu suat cao va tro khang nguon thap.

(Theo Nghe Nhin)