晶体三极管放大电路中 三个电极的电位分别为 V1=-4V,V2=-1.2V,V3=-1.5V ,试判断三极管的类型和材料 某晶体三极管三个电极的电位分别是：V1＝2V，V2＝8V，V...

\u6d4b\u5f97\u5de5\u4f5c\u5728\u653e\u5927\u7535\u8def\u4e2d\u7684\u4e09\u6781\u7ba1\u4e09\u4e2a\u7535\u6781\u7684\u7535\u4f4d\u5206\u522b\u4e3aV1=6V\uff0c

\u6d4b\u5f97\u5de5\u4f5c\u5728\u653e\u5927\u7535\u8def\u4e2d\u7684\u4e09\u6781\u7ba1\u4e09\u4e2a\u7535\u6781\u7684\u7535\u4f4d\u5206\u522b\u4e3aV1=6V\uff0cV2=11.3V,V3=12V,\u5219\u8be5\u4e09\u6781\u7ba1\u7684\u7ba1\u578b\u4e3a _PNP_,\u6240\u7528\u6750\u6599\u4e3a___\u7845___,\u7ba1\u811a1\u4e3a__C____\u6781,\u7ba1\u811a2\u4e3a__B____\u6781,\u7ba1\u811a3\u4e3a__E____\u6781.
\u4e09\u6781\u7ba1\u653e\u5927\u72b6\u6001NPN\u7535\u538bVc>Vb>Ve,PNP\u7684\u7535\u538bVc<Vb<Ve,\u57fa\u6781\u5728\u4e2d\u95f4\uff0c\u6240\u4ee5V2\u4e3aVb\uff0c\u5373\u57fa\u6781b\uff0c\u53c8\u4e09\u6781\u7ba1\u653e\u5927\u72b6\u6001b\uff0ce\u95f4\u7684\u7535\u538b\u964d0.7V\u6750\u6599\u4e3a\u7845\uff0cb\uff0ce\u95f4\u538b\u964d\u4e3a0.3V\u4e3a\u6750\u6599\u9517\uff0c\u521a\u597dV3-V2=0.7,\u6240\u4ee5\u662f\u7845\u6750\u6599\uff0c\u4ece\u800c\u77e5\u9053V3\u4e3aVe\u5373\u53d1\u5c04\u6781e\uff0cV1\u4e3aVc\u5373\u96c6\u7535\u6781c\uff0c\u53c8\u96c6\u7535\u6781\u6700\u5c0f\uff0c\u6240\u4ee5\u4e3aPNP

BE\u7ed3\u5e94\u8be5\u57280-0.7V\u4e4b\u95f4\uff0cV1\u548cV2\u538b\u5dee0.3V\uff0c\u6240\u4ee5\u5e94\u8be5\u662fB\u548cE\uff0cV3\u80af\u5b9a\u662fC\uff0c\u6839\u636e\u5176\u6781\u6027\u65b9\u5411\u53ef\u4ee5\u5224\u65ad\u8fd9\u662f\u4e00\u4e2aPNP\u7ba1\uff0cC\u7684\u7535\u538b\u4f4e\u4e8eB\u548cE\u3002
\u5982\u679cC\u7684\u7535\u538b\u9ad8\u4e8eB\u548cE\uff0c\u5219\u5e94\u4e3aNPN\u7ba1\u3002\u6240\u4ee5\u6709\u4e86NPN\u548cPNP\u7ba1\u7684\u5206\u522b\uff0cV1\u548cV2\u54ea\u4e2a\u662fB\u54ea\u4e2a\u662fE\u4e5f\u5c31\u6e05\u695a\u4e86\u3002
V1 \uff1d 2V\uff0cV2 \uff1d 8V\uff0cV3 = 8.3V\u3002\u65e0\u8bba\u662fNPN\u8fd8\u662fPNP\u90fd\u6709UB\u7535\u4f4d\u5728\u4e09\u4e2a\u6781\u4e4b\u95f4\u5c45\u4e2d\uff0c\u65452\u4e3aB\u3002\u7531\u4e8eV3 - V2 = 8.3-8.0=0.3\u7b26\u5408PN\u7ed3\u7535\u538b(\u9517\u7ba1)\uff0c\u65453\u4e3aE\u3002


\u6269\u5c55\u8d44\u6599\uff1a
\u7535\u5b50\u4e09\u6781\u7ba1 Triode \uff08\u4fd7\u79f0\u7535\u5b50\u7ba1\u7684\u4e00\u79cd\uff09\u3002
\u53cc\u6781\u578b\u6676\u4f53\u7ba1 BJT \uff08Bipolar Junction Transistor\uff09\u3002
J\u578b\u573a\u6548\u5e94\u7ba1 Junction gate FET\uff08Field Effect Transistor\uff09\u3002
\u91d1\u5c5e\u6c27\u5316\u7269\u534a\u5bfc\u4f53\u573a\u6548\u5e94\u6676\u4f53\u7ba1 MOS FET ( Metal Oxide Semi-Conductor Field Effect Transistor)\u82f1\u6587\u5168\u79f0\u3002
V\u578b\u69fd\u573a\u6548\u5e94\u7ba1 VMOS \uff08Vertical Metal Oxide Semiconductor \uff09\u3002
\u6ce8\uff1a\u8fd9\u4e09\u8005\u770b\u4e0a\u53bb\u90fd\u662f\u573a\u6548\u5e94\u7ba1\uff0c\u5176\u5b9e\u91d1\u5c5e\u6c27\u5316\u7269\u534a\u5bfc\u4f53\u573a\u6548\u5e94\u6676\u4f53\u7ba1 \u3001V\u578b\u69fd\u6c9f\u9053\u573a\u6548\u5e94\u7ba1 \u662f \u5355\u6781\uff08Unipolar\uff09\u7ed3\u6784\u7684\uff0c\u662f\u548c \u53cc\u6781\uff08Bipolar\uff09\u662f\u5bf9\u5e94\u7684\uff0c\u6240\u4ee5\u4e5f\u53ef\u4ee5\u7edf\u79f0\u4e3a\u5355\u6781\u6676\u4f53\u7ba1\uff08Unipolar Junction Transistor\uff09\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u6676\u4f53\u4e09\u6781\u7ba1

V2和V3压差0.3，显然这两个就是基极和发射极(对应关系未知)，而且还是锗管，V1为集电极，而集电极为最低电压说明它是电流流向的末端，只有可能是pnp

pnp型，硅管。

PNP型 锗管

PNP型 锗管

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