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2-4. POWER SUPPLV;UNIT.
,
1
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i
q
,co,
i~-'
-" -- -
~·--.:.2
__ · ___
"' 1
~
1)G;~~'r;iT
:
'1" __
!;
Power-
sourc~
unit
are energized
j
mair supply
of
single
'Phase
100V-127'V a.c-(or 200V-240V a.c) .SO/60Hz, and +SV .. ou)put is
stabilized by switching
c6ntrqr;'--*-1~V,outpiIt ai1d~;;5V,- -12V~
-15V
output are
stabili~ed
by 3 or
~-terrryi~al
regulator.
I
:
This power
sourc~
units
cont~ins
a
\n\le~or circult.t)C~ Sigm~iI
ciiiiull,.
and invertor
stop!outgB~,-__:
--l:::.
~
:--
::..--~!:.
-
,
.
I
2) Theory
of
oper~tion
,
,
2-A) EMC filter"
.~
..
~c,r
,-c:-.
~.
.
Fig. 2-46 shows
~MC
(Electf?
Magnetj~p~8abilityY ~ilter
CircUit.
L 1, 2 is RFt (Raqio Frequen?y Interference)
suppre~sion
choke.
C1, 2, 5
are
used for normal: mode RFt suppression:.
G6, 7, 8, 9 are used for corn:mon
mod~,.R~1 suppression.
:
.-;
~.
"-"~L ~- ~-,.,,:'
~
- --
" " j
oS>
1--- -I
-'I
I
-I
B
I
_....:..... ____ ..i..._1
FG
--"~'~I-'---'~-'---'--'~---~-'------'-+
--;- _ _ _ _ _ _ ,
1
:l::(,)FJr~ '/~!:~~{~ 2.~~,.:
1,-_1 -:_:>iI,' ,!I ,
2-B) Input detector circuit
Fig. 2·47 (or 2·48) shows input detector circuit
,
,
[~
1
I
,
, ____ J
Main supply
that.supp~y_through·EMC(EI~ctro
Magnetic Capability)
filter islredified in hridge DS1 -an'd-filtered-
in"C10A~S~'
Maio._supply is
ch~hged
intoi,DG_input.--;:;_ ' .
TH1 A·Stpower--thermistor is used inrush current suppression.
r-------------------,
I
OS1
THIA
1
I
I
I
I
. I
I
I
r---
.. 1-
I
,
1 _ _ _ _ _ _ _
~-J.:.:_:_I,
Fig 2
THIB
I
~
15
I
I.
;,r'if
i
1
1
I
+
+
!Ill
61
,
I
I:.
II
"J'-
I
I
I
1 _____ 1
Figure 2-47 (For 100V series)
01
2}-2B
i - --
~~- ~I~
---'TJ3::I
r;77"~p~S'\!~I:J
1
):.IY;
:Oi
I"~
lei ,-),':r
',:-jj
1
::~
:;-j]));)O)f,
:-:.-
fl.1,.
,I
5.~
:;:L::~-" "'.,:r]>/),i
f
_:''';.,'''r.-;
".;-~;->:"",-,~;cI.r;;;".,.,J:'j;..i,.,-:3;J
b"J:,;":;'-;'{0:,1 :)3b:'all: ; ,:,1; 'I:
:'J
~ I)-~':
;FL ni:.:;m
:~rjj
1_-
_ _ _ _ _ _ _ _ 1
i
" . "
'''0
I . -\' ;';:[,,""")
:~;:61
_~,U
)<;
~r~.,_.""",,";)_,,","'~J""7,7o-,;;,
l.r',
,_~,I::,,:;-,
;;JT,o_.7,u"·,-o'; .. -c.",,-1, t:-,,"oIKi,
,q
,
:);lij
-SO:-, ,,,-'.. "1'1
,J
~
]i!
.c::f;t):.~; '3'lGii~)m!:F.ig;
2'h:'
~Jn;-:;, ~J>i.~)
. :;)
P
"P.-i-) 1{i'1f;,)21
Ol',,;"Ofj
T,' " "'
IL:; ; :Jfno:llqmi ui
1O-~;; ")'q~):_Ji;Tl ,Tim )JI12f::sl.: ':) ~L'i,_j I'p)! ~-
rlT
~)l::;lJd,(j;j
;0
~J ~::.f,:jij~Cj'~' t-='T}~'Jr,
,'no,i'"
ul
1
THIS
I
1:.;.~~1J~::;.r~;J) '7~)]
;
~:1,-:,
'Xl llTYnim
qirlj
,~no
ii'.j-tl)
:]J<>J8
n.'
;:;',i():'li,l-) ;,';")
1' ( 0:
J ' :
rt
T
.i,i\'L')'-:;':j ,J;,l!!
};;'J
Ji',!J-)J>:.i:
X-])S ;, hw,
,. "r1:.":1
\,1)) -eli
it
2-F,igl,lre.J2~;48~(For
,200V:_series)s:
,o,.,;ri
-~:'.)'Jf) 3rt-I
.,cn;r-~;-:'n~!::::jl',i!J:: ~r;:>:/-':r'l rr':-;-!::~':ri~i 10l:1J~'_;;:l ~1f'11 :.::i;;;jl~c.'}
1\,-),:0.' ; ; 0;; 1
t:',2,G)dlJlain.s.witchingcci(cuit
cl:O);:2'''''Ol "
o'.;e';·'
~;:
Q,' .
;;EEig.
:?,::4_9JshCiWS_j main-,swi.to.h_iOg:J;:j(c.l:!i!,':jj
i:-~;l'<I,'
:'I','}j
,-)ili ;
in""
8:,)
The circuit that
const~udte.dJ
by
G.1,b.Q:12,) F.t:1
AB:~H?Aa,· Q1.-;af~l:.Ised
:;·1.tQ'p!otect~';TRl"fr.Qmlhigh::V.qlts:
sl:.I(ge,'.,
;~) ~h!l;:;;1
"U1e)
~~."')ll:'-'V
;
i)I\..'
TR1 is main switching transistor;'Ci!oc!)prodiJce
,bi'g~freq-uer)c~lsquare
wave.
The circuit that constructed by R7,
R&.;'R32,~GjS'~
C4-1".D2AB are
used to drive base of TR1.
~
i,'>n
ilB~>~
vu;i
j,ii
,;}iH:)lif)-':::
FaUowing/explB:oati,ort-:istth'eory thabT:R1 :begin to)',excite",-'i:
1l
In
i10 :
"-,,,n'.'
I
~'.-i; ';;""1 .~";-~
1 --it c'rn;/-
Tl:lFn
190~rn~~t.)
IJ
i _,
~J;:~C;i.tillg.,C],lx~elJtr\IO\"i~ to:b~s~"Qf:,TA1,.t,~r~\-!gt;L, -,
Ii:
,;i}",11(6"'7)F;1~_'~ 'i~;i
'J,"
i_"l,~il -)',::l
:)l!l:'11
J,~~
'J!
"~~':j
dl),J(Jl:H
on
,,:i:,;n:Y
:-;.,1;
,ii', -)111
;i;..;ji)L'
,-11.1).):
'I,))! ':
)1'-; !L)
~)~_; ',~)"-J(l
dn:JIJ:ii:
')i.'I'j
iy-
r:-
,\_:",,:'":7.-;-;-:-:,,:"7 ,;- ' I T - -:)"'""...,. 7:J""T;;7:;::-:'
"7".-:::T:'"
"JliT ;7'iTi7iil
) : II.
:
~ ~.
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1)
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, 1 ,:
i .
!' . '
1":.:1
,"L
Jj~
;)11:'
:~;b_J1;:)
i,
1:1
:''-:J~~d'.
i);
-:),"1' -
;;',.:_i
,,'j ,I,~'-)j-!,;
I,:,
j, __ \j-)
L - . )
;J1:-
'Jdy~)':
-)}:
,";1
r;,
1
jn~)~'
;'
,:,',;J
11-' I::
i:,-;
':-)f)q":;"L"')':Hl
j
,
'~"I;jln;(;;;,-~:'
Figure 2·49
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