Epson LQ-2550 Technical Manual page 77

REV.-A
The waveforms at various points are shown below,
Voltage Vm
across T 110-8
Voltage across
T 17-6
current IB
current IL
Ion
( n=5,-1 2,+12 )
Output current 10
10 = (105 + 10+12 + 10– 12)
As shown in the figure above, the output voltage to the circuits at the secondary side is controlled by
the ON/OFF time of Q 1.
o
- - - - - - - - - - - - - - - - - - - - - - - - -
0
0
0
o
Figure 2-23. Main Switching Circuit 1 Waveforms
- - - - - - - - - - - - - - - - - - - - - - - - - - - -
t
I
I
1
1
1
2 - 3 0
X —
T 110-8