说明：  When the gate-emitter capacitance is fully charged the collector current ID has reached the same value as the external circuit. The gate-emitter voltage, (VGE), will then remain constant because no current changes will now occur. The gate-collector capacitance (CGC) will at this time begin the same procedure as CGE and get charged of the gate current. During this phase the so called Miller plateau occurs, the flat part in Figure 2.3.