?????????(monostable multivibrator)???????(single shot)?????(one-shot)??,????????????,?????????????????????(???????)? - PowerPoint PPT Presentation

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?????????(monostable multivibrator)???????(single shot)?????(one-shot)??,????????????,?????????????????????(???????)?

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(monostable multivibrator) (single shot) (one-shot) ... – PowerPoint PPT presentation

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Title: ?????????(monostable multivibrator)???????(single shot)?????(one-shot)??,????????????,?????????????????????(???????)?


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??????
  • ?????????(monostable multivibrator)???????(single
    shot)?????(one-shot)??,????????????,?????????????
    ????????(???????)?

3
  • (?) TTL???????????????

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(No Transcript)
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  • (?) 555 IC ??????????

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(No Transcript)
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(No Transcript)
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  • ??74121????????,????????????,???????????,??74121?
    ?????,??74121??????????????????
  • (1)B??????A1?A2?????0,??B????????????????????????
    ?????,??????????(?1?/?)????,B?????????

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  • (2)A1?A2??????B?A1?A2?????,?A1?A2?????,????????,A
    1?A2????????????
  • 74121????????,????????,??????????????????,???????
    10?11???(CEXT),????????,????????11????????,??????

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  • (1)???????????(2kO),??9????VCC?????8-11(a)?
  • (2)????VCC??11???????,????REXT??1.4k?40k??,??????9
    ??????8-11(b)?

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  • (?) 555 IC??????????

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  • (?) 74121 IC??????????
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