Epson SQ-B50/2550 Technical Manual page 99

REV.-A
Vcc +24V
+5V
R21/R22
47K
J
Vref
®REFA
COMPI
+2V
C6/C7
T
470P
Gp
I
CD
RSA
t
ION
R5
R27/R28
IOIW
Gp Gp
02
Figure 2-29. Constant-Current Drive Circuit
T I T2 T3
1
I
I
I
TO
o
o
O----....-o!
I
I
I P ---!------
J
I
Vee
Vee
~
V
r ef - -
-1- - - - - -
I
I
8
(0
0)
o
e
8
(0)
8
e
Figure 2-30. Section Operation Wave Forms
2-31