14
June 2004 © TOSHIBA TEC e-STUDIO200L/202L/230/232/280/282 PAPER EXIT SECTION
14 - 3
14.3 Control Circuit of Exit Motor
The following is the control circuit of the exit motor.
The exit motor is a stepping motor. The motor is turned ON/OFF and the direction of its rotation is
switched by controlling the output timing of pulse signal (A0·A1·B0·B1).
VREF is the reference voltage for the current control of the motor.
Fig.14-2
PG10
PG12
PG11
PG13
Engine-
CPU
DICH1
LDCH1
CLKCH1
ASIC
DI
LD
CK
IC22
IC24 IC52
IC50
D/A
converter
EXTMA
EXTMB
EXTMC
Exit Motor
EXTMD
EXTMA-0
EXTMC-0
EXTMB-0
EXTMD-0
STK672
A
AB
B
BB
A0
B0
A1
B1
VREF
LGC board
To Next Page
Loading...
