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Chapter 7 xږः̒ఙࣖཥ౺᜗ (MOSFET) ׳ɽཥ༩

                            11. νྡ (7) הͪʘཥ༩dMOSFET ʘᑗޢཥᏀ€threshold voltageV  = 1Vdਞ
                                                                                                        T
                                                 2
                              ᅰ K =0.4mA / V dʔϽᅇӝ฽፩̈ཥڜdۆ V  / V  ߒމОk
                                                                                  o
                                                                                      i
                              (A) –12.5c(B) –9.9c(C) –8.3c(D) –6.4f                                         103 統測
                                                       +10 V                                      +20V
                                                 4kΩ
                                                             V
                                                              o
                                                    D                              20kΩ      2kΩ      V  (t)
                                        V   i  G                                                       o
                                                                                V  (t)
                                                                                 i
                                          10 MΩ     S

                                                                                   20kΩ
                                             3V                                             1kΩ     C B
                                                +
                                                -

                                                 ྡ (7)                                      ྡ (8)

                            12. νྡ (8) הͪʘ FET ׳ɽኜཥ༩ʕdA  = V (t) / V (t) މʃڦ໮ʘཥᏀᄣूd༊
                                                                              o
                                                                                     i
                                                                        v
                              ਪ୅ৰࣙ༩ཥ࢙ C ܝdՉ | A  | ၾ୅ৰۃˢ༰ϞОʔΝk
                                                               v
                                                  B
                              (A) ᜊʃc(B) ᜊɽc(C) ʔաᅂᚤc(D) ฽׌ҷᜊf                                              101 電機
                           13. ɨΐ̬၇Պۨٙ FET ΍๕฽਋Ꮐཥ༩ʕdV                         GS(t)  މ FET ኬஷٙᑗࠢཥᏀdਞᅰ
                                                  2
                              K ٙఊЗމ mA/V dV           DSQ  މ FET ٙӝ฽ၾ๕฽ගٜٙݴʈЪཥᏀd৿ண̬ࡈ
                              FET ٙᆄɢཥᏀޫމ ∞dA  = v (t) / v (t) މʃڦ໮ཥᏀᄣूd༊ਪɨΐО٫̙
                                                            v
                                                                 o
                                                                        i
                              ੻௰ɽٙཥᏀᄣू | A  | k                                                             101 電機
                                                      v
                                                   +9V                                        +10V

                                              3kΩ
                                                        v  (t)                          3kΩ
                                                         o
                                                                               1MΩ                v  (t)
                                                                                                   o
                                    v  (t)
                                     i
                              (A)                                     (B)                                    2
                                                    K=1mA/V  2              v  (t)                K=0.4mA/V
                                                                             i
                                       5MΩ          V GS(t) =1V                                   V GS(t) =1V
                                                                               1MΩ
                                       2.5V                                           2.5kΩ
                                            +
                                            -
                                                                                                     +5V
                                                       +8V
                                    K=0.8mA/V  2                                                3kΩ
                                    V GS(t) =+2.5V  3kΩ                                                  v  (t)
                                                                                                          o
                                                            v  (t)                   5MΩ     5MΩ
                                                            o
                              (C)                        +            (D)                             +
                                       v  (t)            V DSQ =2V         v  (t)                     V DSQ =2V
                                                                           i
                                       i
                                                         -                                            -
                                          5MΩ                                      K=0.7mA/V  2
                                                  1kΩ                              V GS(t) =1V

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