what is the difference between depletion and enhancement of mosfet?

FET, what is the difference between depletion and enhancement?

1. Depletion type: that is, a device that can conduct electricity when the gate bias voltage is 0.

    2. Enhanced type: that is, a device that is not conductive when the gate bias voltage is 0, that is, a field effect transistor with a conductive channel can appear only when the size of the gate voltage is greater than its threshold voltage.

    Second, the characteristics are different

    1. Depletion type: the source and drain of the FET are symmetrical in structure and can be used interchangeably, and the gate-source voltage of the depletion FET transistor can be positive or negative. Therefore, the use of FETs is more flexible than transistors.

    2. Enhanced type: the original channel of the enhanced type is narrow and the doping concentration is low, so that the channel is clipped when the gate voltage is 0, and the channel is generated and conductive only when the positive gate bias voltage (must be less than 0.5V) is added; The output volt-ampere characteristic remains saturated.