電(dian)(dian)熱(re)管發(fa)熱(re)量的計算 可以(yi)用調壓器(qi)通(tong)過改變(bian)輸(shu)入電(dian)(dian)壓和電(dian)(dian)流來改變(bian)發(fa)熱(re)量。
發熱(re)量與電(dian)壓平方成(cheng)(cheng)正比,與電(dian)流平方成(cheng)(cheng)正比。
電(dian)壓變(bian)(bian)為原來(lai)的1/2時,發熱量變(bian)(bian)為1/4
電流變(bian)為原(yuan)來的(de)1/2時,發熱量(liang)也變(bian)為1/4