Star MP212FP-24-A Specification And Operating Instructions page 24

Dot matrix printer mechanism
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Ribbon shift solenoid (RS-SOL)
Item
Specifications
Supply voltage
24VDC* 1.2V
Pulse width
T1-sig 18 pulse (Approx. 12ms)
Coil resistance
Approx. 57.OQ
Average current
Approx. 400mA
I
Control
G
I
t-
Fig. 3-16 Current waveform of RS-SOL
VH(24V)
+5V
~
*
Signal
RI
D1
w
17:
TRj --
.
/.
.1
Drive Signal
u
-'l
Fig.
3-17
RS-SOL drive circuit (example)
I
TB1
I 2SD201O (ROHM)
I D1
I DSMID1
I
R1
IKfl
Solenoid
R2
330Q
VH
23V + TR1 VCE (sat.) = 24V
-20-

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