强！自制电容表的源程序和PCB图,很多贴片电容都没有标明电容值，而我又舍不得扔了它们；自己做电路玩时，经常看到一些废电路板上有很多贴片电容，可以拆下来用，但是却看不到容量，很郁闷。所以我决定做一个电容表来测试它们的容量。 我用单片机8952和电压比较器339做了一个简单的电容容量测量表，参数大致如下： 电容测量范围为1pF-9999.99uF，最小分辨力为1pF。分为5个量程，可以自动切换量程，也可手动切换。 另外，有简单的频率计功能，能测量0-60MHz的数字信号频率（TTL电平）；还可以产生几个单点频率的方波信号（比如1KHz）。-strong! Table homemade capacitance of the source and PCB plans, many chip capacitors are not marked with capacitance values, and I could not bear to throw them; Circuit done playing, I always see some circuit board waste a lot of chip capacitors, used to be removed, but I fail to see the capacity, very depressed. So I decided to make a capacitance meter to test their capacity. I used SCM 8952 and voltage comparator 339 to do a simple capacitance measurement table, along the following parameters : capacitance measurement range to max-9999.99uF, minimum resolution of the disturbance. Divided into five range, it will automatically switch range can also manually switch. In addition, a simple function of frequency meter, capable of measuring 0-60MHz digital signal frequency (TTL level); Some ca