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diode does not work on zero bias

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diode does not work on zero bias

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dormant semiconductor

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  • the junction is conducting when forward biased, approaching zero resistance
  • the junction is nonconducting when reverse biased, approaching infinite resistance

neither is exactly zero or infinite

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With the E-MOSFET, VGS has to be, 'greater than VGS(th) to get any drain current at all. Therefore, when E-MOSFETs are biased, self-bias, current-source bias, and zero bias cannot be used because these forms of bias depend on the depletion mode of operation. This leaves gate bias, voltage-divider bias, and source bias as the means for biasing E-MOSFETs.

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There is no risk

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