饮水机,的工作电路如图所示,S是一个温度控制开关,当水温升到一定温度时,会自动处于保温状态R0是加热电 如图所示是家用饮水机的工作原理电路,,其中S是温度控制开关,...
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r 的阻值与保温无关,只是一个指示灯提取电压电阻,应该在1兆以上是2.2K欧
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绛旓細鈶1.5kg锛屸懙 鈶2.5A锛 6.6脳10 5 J 锛屸憽5.04脳10 5 J 锛屸憿76.4% 锛屸懚1100惟 鈶存按鐨勮川閲忥細 =1.0脳10 3 Kg / m 3 脳1.5脳10 -3 m 3 =1.5kg鈶甸氳繃楗按鏈虹殑鐢垫祦鏄細 楗按鏈烘秷鑰楃殑鐢佃兘鏄細 姘村惛鏀剁殑鐑噺鏄細 楗按鏈虹殑鏁堢巼鏄細 锛3锛塕 2 鐨勯樆鍊兼槸锛
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绛旓細鎴戠煡閬撹繖閬撻銆楗按鏈鍔犵儹鏃舵秷鑰楃殑鐢佃兘锛歐=Pt=550W脳15脳60s=4.95脳105J锛涘綋S0鏂紑鏃锛岀數璺涓彧鏈塕2锛屾诲姛鐜囪緝灏忥紝涓轰繚娓╃姸鎬侊紝R2=$\frac{{U}^{2}}{{P}_{2}}$=$\frac{{锛220V锛墋^{2}}{44W}$=1100惟锛庢秷鑰楃殑鐢佃兘鏄495000 R2 鐨勭數闃绘槸1100惟 瀵瑰惂锛
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绛旓細锛1锛夌孩锛岄粍 锛2锛462惟
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