Cau B o o n t o n 72B l a not t h i e t b i e h u i n , s a n x u a t cong n g h i i p t a i My
[ 5 4 ] . Mot s o t h o n g só Ky t h u a t eiia c a u nhU s a u ; Tan s o d a o dong n u o i c a u : IMHZ
B i e n do song 1MH2 n u o i c a u : 15mV - 1 2 - 9 D a i tJnang do : 10 - 3. 10 . Do p h a n g i a i : 5. 10 pF Hang s o t h o i g i a n : ims Tap b i r i h ptniong t r u n g b i r i h : <lmV,
Mach c i u t a i d i u v a o d i o c t h i e t Ke rihut t r e n Hirih 4. 10
T r o n g do d a o dong IMHZ d i o c d u a v a o q u a h a i c u o n L^, L^. H a i c u o n n a y dong t h o i l a h a i rihanh e i u . H a i nharih c o n l a i l a C104 v a l o i TEST dung c h o mau dọ
Mach c i u Khong c h i c h o p h e p do c a c d i e n dung Khong d o i ma c o n e h o i*iep do c a e d i e n dung b i e n d o i t h e o K i e h t h i e h ciia d i e n a p b e n n g o a i . Cac 1 o i v a o L o - B i a s v a H i - B i a s d i o c sii dung d e d i a d i i n a p p t i a n ciic n g u o e v a ?0 1 5 mV i VHz LI L2 CI 02 cioi -0 £ HZZZZh RlOl R102 TEST L3 Lo \A_ Hi DIFF €) ^^ .r KDLL > 150 mV 1 >Hz C104.
xung K i e h t h i e h I e n mau do ^ J i l i 4. iỌ Mach c a u cua BooDtOD 72B
9 9 -
Trong qua t r i r i h t h a y doi rihiet do, d i e n dung lop chuyen cung t h a y
doi (Hinh 3. 25) d&i den c^u b i lech. Loi DIFF dioc nac t u bu die mach
e i u do luon o g i n v i t r i e i n bang. Fliep bu trut eo t h e sii dung bang t a y hoac t u dong riho moto bUoc.
)
1. 2. Chong qua t a i ^n vao Khoi Khuech d a i loc liia (KDLL).
T i n h i e u o l o i r a cua mach cau (150MV-lMiz) dioc d i a vao bo Khuyech d a i IMHz. Tnioc Khi vao KDLL, t i n h i e u d i qua mach bao v i qua t a i d i u vao (Hinh 4. 11) gan r o l e R v a d i o t D.
Til cau R L102 ( ^ — — — + 20V ? — r C l l l C t r D Vao ia)LL H ' LI 10 R106 ^
Hirih 4. 11. Mach bao v i dau vao Khoi KDLL
I TlBlc t e , t r o n g ptiep do C (t, T), xung p*iin cute Kich t h i c h mau l a xung CO b i i n do Ion (IV-lOV) rihiing do rong xung l a i riho (co 0, 1ms). xung CO b i i n do Ion (IV-lOV) rihiing do rong xung l a i riho (co 0, 1ms).
d i e u nay g i y nen wbt xung i o n o l o i r a ciia mach c a n Xung nay l a cjua
riharih doi v o l phan utng cua Role nen Role Khong t h e n g a t Kip. Mac du c6 cac mach Li02, C l l l . D lam suy giam rihiing Khuyech d a i xung nay t r o n g mach KDLL l a Khong c a i t h i e t v i phan t i n h i e u quan tam eua piiep do nam o s a u xung KicJi t h i e h . Khong rihiing t h e , v i e c eo mat eua xung Kieh t h i c h con g i y s a i so cho ptiep xii l y so l i e u t r ^ n diong q u i do neu e i u do CO hang so t l i o i g i a n I o n
100-
Dí t r a r i h t i r i h t r a n g nay ,6 t h i ' sii dung eac b i e n phap: 1) T3iay R hang Khoa di^r tii (vi dii MC4066)
2) Noi mau vao cau dc ^ t r o n g t h a i g i a n l a p l a i cua xung Kich:
« Trong t h a i g i a n xurj? Kich t h i c h t i c dung l i n nmi:
H a i d i o c nga*. :<hoi c ^
« Tr>Dng t b o i g i a n lap . a i ciia xung Kich t h i c h :
Hau d i o c noi Tao caa de do d i e n dung qua dọ
1. 3. De n^a c a i t i ^ c ^
« Mact dt Brno ntkn cac:
Tljeo so do H i r h 4. 10. xung p h i n cilc dioc d i a vao Kich t h i c h mail do t h e o l o i Lo-Bias. Nhu - ^ i n h bay a itian t r i n , e i c h lam nay t u y
CO g i a n t i e n t r o n g thufc b i e t ptiep db nhiing n a c h e ^ p h a i c h i u mot b i i n do xung qua Ion. De loai trijf anh hiiong cua xung ptiin cilc vao qua t r i n h db, cbaiig t o i de nghi mot ptniong an p h i n cute m&i b i n ngoai c ^
do Etni so do c h i r a t r e n Hirr. 4. 12.
Hue d i c h cua mach l a ngat m&i r^. Khoi c i u Khi co xung ptian ciic. Trong Khoang t h o i g i a n Fban cilc mau, xung l o g i c 1 d i e u Khien n e t Khoa d i i n t i i (M>K>66) de noi l o i vao HI xuong d^t, dong t h o i xung
l o g i c 2 d i e u Khien not Khoa dien t i i Khac de n g a t mau Khoi l o i vao LỌ NhU v i y , nSn d i o c n o i vạ^ c ^ do c h i tixjng Khoang t h a i g i a n l a p
l a i Tg can d i o c n g h i e n eutụ Hguyin l y nay cho ptiep trarih dioc q u i t a i
dau vao Kh^i KEt*L, dong t h o i giQ cho diiong qua do C ( t ) t r u n g thilc theo
101
Xung ptiin cUc
J
U
Logic 1 _r
Logic 2 ~i
Xung phan cUc r
Dilbng C ( t )
Loi r a 0 (74154.) U Loi r a 1 (74154)
, Noi Hi xucnng dat
Ngat d i o t r a khoi Lo
Hinh 4. 12. R i i n cilc mau b i n ngoai c i u dọ
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