適應外部電源供應到新的水平VI規(guī)格

　　符合能源之星標準一樣，由美國環(huán)境保護署（EPA）的產生和能源部（DOE），外部電源（EPS）或適配器制造商繼續(xù)改善待機或空載功耗，其開關電源（SMPS）整體轉換效率超過二十年。現在，新標準有望進一步提高對新一代外部電源的酒吧。美國能源部已經建立了新的水平VI規(guī)范，預計將于二月在美國生效。

　　在這個日期之后，原始設備制造商必須確保外部電源適配器伴隨他們的產品在美國銷售必須符合新的水平VI法規(guī)。國際效率標記協議要求符合標準的EPS供應二月后必須在其產品標簽上顯示VI級標記。

　　Currently， however， the U.S. and Canada require external-power adapters to meet Level IV requirements while the European Union （EU） demands such units to carry Level V markings. But experts believe that the EU and Canada will quickly follow the U.S. lead， requiring OEMs to ensure that all external power supplies are compliant with Level VI regulations.

　　The new standard is designed to conserve power primarily in consumer and industrial products， while medical power supplies are exempt from the new DoE regulations. According to power supply manufacturer CUI， any products approved by the U.S. Food and Drug Administration are not part of this new regulation. CUI in fact， is one of the few suppliers that is already offering Level VI-compliant EPSs.