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Block Diagram
IC203 (TDA4685)
Hue control
vo Itage
M5.MO, #.s.iAse, A65.IW3
SDA
12
C
BUS
-u5x4a--------------------------
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ,
SCL
Ac5.Alxt A15.Am, M.Am, A25.A3U
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
4
,,
m
ISTAND2ND
;
: BREN
SWICH-ON
DELAYS
VFE
.. . . . . . . . . . . . . . . . . . .
Leakage
and
cut -off
~
current input
1 1'7
(
BCOF
1ST,
iES
R
Sandcastle
BK
4
+
pu15e
SANOCASTLE
m,,, or
1
)1
F&
:~mye'
Peak driie
ti I-& limiting
storage
PEAK DRIVE
AND
AVERAGE
BEAM
4
CURRENT
LIMITING
w
4
n
3X6 BIT
O/A
CONVERTERS
e
Ave rage
beam current
RI ++@)
,1:
4
m
v
I
v
-(R-Y)+
G2-1
I
~
I
B
SUPPLY
-------
12 Cbusdata
and
!offstorage
control signals
1
+
B ac
hold
T
A.P. +
D.P.
OUT%
IN
. .
,.
Block Diagram
IC301 (CXAI 420P)
r i
A PL
.,.
),-output
W%=+k==!i!
w
'm"LA"=
x
+.J43
Cinput
c Outmlt
Blanking
Clamp
pulse/
Digital
Analogue
pulse
sand castle pu Ise
greund
ground
xx
–5–
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