電(dian)(dian)熱(re)管(guan)發熱(re)量(liang)的計算(suan) 可以用調壓器通(tong)過改變輸入電(dian)(dian)壓和電(dian)(dian)流來改變發熱(re)量(liang)。
發熱(re)量與電(dian)(dian)壓(ya)平方成(cheng)正比,與電(dian)(dian)流平方成(cheng)正比。
電壓變為原來的1/2時,發熱量(liang)變為1/4
電(dian)流變為(wei)原來的(de)1/2時,發熱量也變為(wei)1/4