Epson LX-810 Technical Manual

REV.-A
Switching Pulse Output
The output of the error amplifier in KPC494C is determined by the difference between the output pulse
of the internal oscillating circuit and the feedback voltage from the + 24V output. The feedback voltage
changes according to printer operation (i.e., printer load). The output of the error amplifier acts to
minimize this change, however, by responding as indicated in Figure 2-19.
Operation Low feedback voltage: Amplifier ON time increases (supply voltage increase)
High feedback voltage: Amplifier ON time decreases (supply voltage decreases)
v
I
1( 1 II
Im_IL’’’’ompara’or
Figure 2-19. output Transistor Drive Waveform
2-17

Epson LX-810 Specifications

General

Print Method	Impact dot matrix
Number of Pins	9
Character Sets	96 characters (USASCII)
Line Spacing	1/6 inch
Paper Path	Rear
Interface	Centronics parallel
Noise Level	55 dB (A)