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IC 555

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Astable Multivibrator Square wave ... – PowerPoint PPT presentation

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Title: IC 555


1
IC 555
???????? ???????????????????????
?????????????????????????????
???? ?????? SquareWave
??????????? ???????
2
????????? 555 ?????????????????????????????? ?????
?????????????? ?????????
????????????????????????????????????????? ???
????????????????????????
????????????????? IC 555
3
?????????????????????? 555
?????????????????????? 555
4
???????????????555
1. GND
???????????????????????????????????
5
2. TRIGGER
??????????????????????????????????????????????
3. OUTPUT
??????????????????????????????????????????
4. RESET
?????????????????????????????????????????????????
6
5. CONTROL VOLTAGE
????????????????????????????
6. THRSSHOLD
????????????????????????????????????
7. DISCHARGE
????????????????? C ????? C ??????????????????????
??? ????????????
7
????????????? 555
????????????? 555
8
                          
??????????????????? 555 ?? 2 ???????
1. ??????????????? Monostable Multivibator
???????????????????????????????? 1 ???
???????????? ????(???????)?????????????????
9
??????????? Monostable Multivibator
10
2. ????????????? Astable Multivibrator
?????????????????? Square wave ??????????????????
?????????????????????? ???????????????????
C ????????????????? RA ??? RB
11
??????????? Astable Multivibator
12
?????????????
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