Cut off state: When the voltage applied to the emitter junction of the transistor is less than the conduction voltage of the PN junction,
Based on the high or low potential of each electrode during the operation of a transistor
Crystal transistor is one of the basic semiconductor components,
According to the principle of low forward resistance and high reverse resistance of P-N junction
After finding the discrimination base for the emitter atransistornd collector,
If it is an NPN transistor, simply swap the meter rod for measurement,