Canon A-1 Repair Manual page 125

H
f - - - - -
T - - - -
o Fig. 3-10. is a schematic
representation of the dual
ramp interqration analog
digital convertor.
0
H changes inversely with
brightness.
High BV -
Small H
Low BV
-
Large H
0
tl is fixed at 10
mS
0
t2 varies
with
BV ie H
ARa
AR. ART
High BV -
Small H - Short
t2
lARa)
Low BV ,. Large H
- Long t2
0
T
is fixed
Fig. 3-10
(See also Fig. 3-15, Fig. 3-16)
13. CAD
+
(4P)
BV
AID
convertor capaCitor CAD input to amplifier.
14. El (5P)
Main supply voltage for all circuits. (Approx. Battery
voltage - 0.3V).
15. KVC
Standard control voltage for most circuits.
16. AR5I (7P)
KVC - 1.625 i 5' (See also Fig. 3-17)
Note: KVC, rather than Vc used in the AE-l is the
standard voltage for the A-l.
69