图2 - 24示出静电计或皮安计的过载保护电路，其中包括一个电阻器和两个二极管(1n3595)。
Figure 2-24 shows a protection circuit for an electrometer ammeter or picoammeter, consisting of a resistor and two diodes (1n3595).
由于静电计、安培计或皮安计的输入端压降小于1mV，这两个二极管不会导通。
Since the voltage burden of the electrometer ammeter or picoammeter is less than 1mV, the diodes won't conduct.
由于静电计、安培计或皮安计的输入端压降小于1mV，这两个二极管不会导通。
Since the voltage burden of the electrometer ammeter or picoammeter is less than 1mV, the diodes won't conduct.
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