môn khí cu dien
DESCRIPTION
role thoi gianTRANSCRIPT
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Nhm trnh by: Nhm 5Ni dung trnh by: Kh c in iu khin R le thi gian.
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Trnh by c khi nim, cu to, nguyn l hot ng ca r le thi gian.S dng thnh tho r le thi gian m bo an ton cho ngi v thit b.
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4.4.R LE THI GIAN4.4.1.Khi qut chunga Khi nim:R le thi gian l mt kh c in to thi gian m chm hot ng chm ca h thng tip im so vi thi im a tn hiu tc ng vo r le.b Cu trc chung ca r le thi gian:Tn hiu voTn hiu ra
Khi nhn tn hiu
Khi to thi gian tr
Khi chp hnh
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C Phn loi
Cn c vo b to thi gian tr
R le thi gian in t
R le thi gian in t
R le thi gian kiu thy lc
R le thi gian kiu ng h
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d Mt s hnh nh v r le thi gian
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d Mt s hnh nh v r le thi gian
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2.CU TO V NGUYN L LM VIC CA RLE THI GIAN
A.Cu toC cu in t
Mch tCun dyH thng tip imI< hoc bng 6mA
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UAC[+-+12vCLR+-C1D2AR1R2C2R3QRL-DCB UAC
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1- 3: Tip im thng m 1- 4: Tip im thng ng5- 8: Tip im thng ng m chm6- 8: Tip im thng m ng chm2- 7: Cun dy S ni dy
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K hiu rle thi gian trong s mch inON-DELAY- Cun ht ca r le thi gianOFF-DELAY
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+ Tip im thng ng m chm:Hoc- Tip im ca r le thi gian+ Tip im thng m ng chmHoc
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Khi cp in vo chn 2-7
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Khi cp in vo chn 2-7Sau 1 thi gian ty theo ngi iu chnh
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