* Question
| What do you know from the principle of normal operation of junction FETs? |
* Answer
| The junction between the gate and the channel of the junction FET is reverse biased. The gate current io=0, the input impedance is very high: 2 The drain current is controlled by the gate-source voltage %s.Therefore, the FET is voltage control} also flows the device; 3 before the pre-pinch, that is, when %s is small, the relationship between iD and %s is basically ‘PE relationship,The t-:fi邑 weakened special ‘陛’ is called depletion type, so the junction field effect tube is depleted; when the 5P channel junction field effect transistor is working, the polarity of the power supply and the N-channel junctionThe polarity of the source of the field effect tube is opposite. |
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