大神们，请问npn和pnp两种三极管分别是怎么接线的，正负极怎么接？ PNP和NPN三极管区别

\u4e09\u6781\u7ba1\u5728\u7535\u8def\u4e2d\u600e\u4e48\u63a5\u7ebfNPN\u548cPNP\u90a3\u4e2a\u662f\u63a5\u6b63\u90a3\u4e2a\u662f\u63a5\u8d1f

\u3000\u3000NPN\u578b\uff0c\u96c6\u7535\u6781C\u63a5\u7535\u6e90\u6b63\u6781\uff0c\u53d1\u5c04\u6781E\u63a5\u7535\u6e90\u8d1f\u6781\uff0c\u57fa\u6781B\u901a\u8fc7\u504f\u503c\u7535\u963b\u63a5\u6b63\u6781\u3002PNP\u578b\uff0c\u96c6\u7535\u6781C\u63a5\u7535\u6e90\u8d1f\u6781\uff0c\u53d1\u5c04\u6781E\u63a5\u7535\u6e90\u6b63\u6781\uff0c\u57fa\u6781B\u901a\u8fc7\u504f\u503c\u7535\u963b\u63a5\u8d1f\u6781\u3002
\u3000\u3000\u4e09\u6781\u7ba1\uff0c\u5168\u79f0\u5e94\u4e3a\u534a\u5bfc\u4f53\u4e09\u6781\u7ba1\uff0c\u4e5f\u79f0\u53cc\u6781\u578b\u6676\u4f53\u7ba1\u3001\u6676\u4f53\u4e09\u6781\u7ba1\uff0c\u662f\u4e00\u79cd\u63a7\u5236\u7535\u6d41\u7684\u534a\u5bfc\u4f53\u5668\u4ef6\u00b7\u5176\u4f5c\u7528\u662f\u628a\u5fae\u5f31\u4fe1\u53f7\u653e\u5927\u6210\u5e45\u5ea6\u503c\u8f83\u5927\u7684\u7535\u4fe1\u53f7\uff0c \u4e5f\u7528\u4f5c\u65e0\u89e6\u70b9\u5f00\u5173\u3002\u6676\u4f53\u4e09\u6781\u7ba1\uff0c\u662f\u534a\u5bfc\u4f53\u57fa\u672c\u5143\u5668\u4ef6\u4e4b\u4e00\uff0c\u5177\u6709\u7535\u6d41\u653e\u5927\u4f5c\u7528\uff0c\u662f\u7535\u5b50\u7535\u8def\u7684\u6838\u5fc3\u5143\u4ef6\u3002\u4e09\u6781\u7ba1\u662f\u5728\u4e00\u5757\u534a\u5bfc\u4f53\u57fa\u7247\u4e0a\u5236\u4f5c\u4e24\u4e2a\u76f8\u8ddd\u5f88\u8fd1\u7684PN\u7ed3\uff0c\u4e24\u4e2aPN\u7ed3\u628a\u6574\u5757\u534a\u5bfc\u4f53\u5206\u6210\u4e09\u90e8\u5206\uff0c\u4e2d\u95f4\u90e8\u5206\u662f\u57fa\u533a\uff0c\u4e24\u4fa7\u90e8\u5206\u662f\u53d1\u5c04\u533a\u548c\u96c6\u7535\u533a\uff0c\u6392\u5217\u65b9\u5f0f\u6709PNP\u548cNPN\u4e24\u79cd\u3002

\u4e3b\u8981\u533a\u522b\u662f\u7535\u6d41\u6d41\u5411\u548c\u7535\u538b\u4e0d\u540c\uff1a1. PNP\u7ba1\u5b50\u662f\u53d1\u5c04\u6781\u6d41\u5165\u540e\u4ece\u57fa\u6781\u548c\u96c6\u7535\u6781\u6d41\u51fa\uff0cNPN\u7ba1\u5b50\u662f\u57fa\u6781\u548c\u96c6\u7535\u6781\u6d41\u5165\u4ece\u53d1\u5c04\u6781\u6d41\u51fa\u3002
2. PNP\u7ba1\u5b50\u5de5\u4f5c\u5728\u653e\u5927\u533a\u65f6\u7535\u538b\u662f\uff0cUe>Ub>Uc\uff0cNPN\u7ba1\u5b50\u5de5\u4f5c\u5728\u653e\u5927\u533a\u65f6\u7535\u538b\u65f6Uc>Ub>Ue\u3002
3. PNP\u662f\u5171\u9634\u6781\uff0c\u5373\u4e24\u4e2aPN\u7ed3\u7684N\u7ed3\u76f8\u8fde\u505a\u4e3a\u57fa\u6781\uff0c\u53e6\u4e24\u4e2aP\u7ed3\u5206\u522b\u505a\u96c6\u7535\u6781\u548c\u53d1\u5c04\u6781\uff1b\u7535\u8def\u56fe\u91cc\u6807\u793a\u4e3a\u7bad\u5934\u671d\u5185\u7684\u4e09\u6781\u7ba1\u3002NPN\u5219\u76f8\u53cd\u3002
4. PNP\u7ba1\u5b50\uff1a\u53d1\u5c04\u6781\u7535\u6d41 = \u96c6\u7535\u6781\u7535\u6d41 + \u57fa\u6781\u7535\u6d41
5. NPN\u7ba1\u5b50\uff1a\u96c6\u7535\u6781\u7535\u6d41 = \u53d1\u5c04\u6781\u7535\u6d41 + \u57fa\u6781\u7535\u6d41
\u6269\u5c55\u8d44\u6599\u5de5\u4f5c\u539f\u7406\uff1a
\u6676\u4f53\u4e09\u6781\u7ba1\u6309\u6750\u6599\u5206\u6709\u4e24\u79cd\uff1a\u9517\u7ba1\u548c\u7845\u7ba1\u3002\u800c\u6bcf\u4e00\u79cd\u53c8\u6709NPN\u548cPNP\u4e24\u79cd\u7ed3\u6784\u5f62\u5f0f\uff0c\u4f46\u4f7f\u7528\u6700\u591a\u7684\u662f\u7845NPN\u548cPNP\u4e24\u79cd\u4e09\u6781\u7ba1\uff0c\u4e24\u8005\u9664\u4e86\u7535\u6e90\u6781\u6027\u4e0d\u540c\u5916\uff0c\u5176\u5de5\u4f5c\u539f\u7406\u90fd\u662f\u76f8\u540c\u7684\u3002
\u5bf9\u4e8eNPN\u7ba1\uff0c\u5b83\u662f\u75312\u5757N\u578b\u534a\u5bfc\u4f53\u4e2d\u95f4\u5939\u7740\u4e00\u5757P\u578b\u534a\u5bfc\u4f53\u6240\u7ec4\u6210\uff0c\u53d1\u5c04\u533a\u4e0e\u57fa\u533a\u4e4b\u95f4\u5f62\u6210\u7684PN\u7ed3\u79f0\u4e3a\u53d1\u5c04\u7ed3,\u800c\u96c6\u7535\u533a\u4e0e\u57fa\u533a\u5f62\u6210\u7684PN\u7ed3\u79f0\u4e3a\u96c6\u7535\u7ed3,\u4e09\u6761\u5f15\u7ebf\u5206\u522b\u79f0\u4e3a\u53d1\u5c04\u6781e\u3001\u57fa\u6781b\u548c\u96c6\u7535\u6781c\u3002
\u5f53b\u70b9\u7535\u4f4d\u9ad8\u4e8ee\u70b9\u7535\u4f4d\u96f6\u70b9\u51e0\u4f0f\u65f6\uff0c\u53d1\u5c04\u7ed3\u5904\u4e8e\u6b63\u504f\u72b6\u6001\uff0c\u800cC\u70b9\u7535\u4f4d\u9ad8\u4e8eb\u70b9\u7535\u4f4d\u51e0\u4f0f\u65f6\uff0c\u96c6\u7535\u7ed3\u5904\u4e8e\u53cd\u504f\u72b6\u6001\uff0c\u96c6\u7535\u6781\u7535\u6e90Ec\u8981\u9ad8\u4e8e\u57fa\u6781\u7535\u6e90Ebo\u3002
\u5728\u5236\u9020\u4e09\u6781\u7ba1\u65f6\uff0c\u6709\u610f\u8bc6\u5730\u4f7f\u53d1\u5c04\u533a\u7684\u591a\u6570\u8f7d\u6d41\u5b50\u6d53\u5ea6\u5927\u4e8e\u57fa\u533a\u7684\uff0c\u540c\u65f6\u57fa\u533a\u505a\u5f97\u5f88\u8584\uff0c\u800c\u4e14\uff0c\u8981\u4e25\u683c\u63a7\u5236\u6742\u8d28\u542b\u91cf\uff0c\u8fd9\u6837\uff0c\u4e00\u65e6\u63a5\u901a\u7535\u6e90\u540e\uff0c\u7531\u4e8e\u53d1\u5c04\u7ed3\u6b63\u504f\uff0c\u53d1\u5c04\u533a\u7684\u591a\u6570\u8f7d\u6d41\u5b50\uff08\u7535\u5b50\uff09\u57fa\u6781\u533a\u7684\u591a\u6570\u8f7d\u6d41\u5b50\uff08\u7a7a\u7a74\uff09\u5f88\u5bb9\u6613\u5730\u8d8a\u8fc7\u53d1\u5c04\u7ed3\u4e92\u76f8\u5411\u5bf9\u65b9\u6269\u6563\u3002
\u53c2\u8003\u8d44\u6599\uff1a\u4e09\u6781\u7ba1--\u767e\u5ea6\u767e\u79d1

1.    你可以试试看看这个，如果直接接上用着ok，下次有可能会忘记了。

2.    三极管有两种 NPN和PNP （PNP基极用负电压驱动三极管，NPN基极用正电压驱动三级管）

3.    区分三极管的类型，三极管是由两个PN结组成，符号的箭头所以总是由P指向N

4.可理解为如下图： 

5. 接线图如图所示：接单片机控制三极管通断，间接控lED灯。

注意事项：注意三极管的导通条件和限流电阻

此二种接法恰好相反。即NPN集电极接正电源，而PNP集电报接负电源。

电路图如下