Star Micronics TSP1000 Series - Drive Circuit

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Drive circuit
The recommended drive unit is shown below.
Note:
1) Pin 1 must be shield drain wire connected to buzzer device frame ground.
2) For continuous driving, Maximum drive output is 0.1A.
3) Absolute maximum ratings for diodes D1 (Ta = 25°C) is:
Average Rectified Current Io = 1A
4) Absolute maximum rating for transistors 2SD1866 (Ta = 25°C) is:
Collector current Ic = 2A
2SD1866
61
6-P Modular jack
connector
1
2
3
4
F.G
D1
+24V
7824
M-GND
User side
Printer side
Buzzer
[ Drive Circuit ]
E
C
R3 R4
B
Reference
2SD1866 Circuit Configuration
Drive Output: 24V, Max. 1.0A
R3=3.5K
R2=300