Epson Perfection 610 - Manual (Page 19)

EPSON Perfection 610 Rev. B
Operating Principles Engine Mechanism 19
Figure 2-5. Power Supply Circuit Block Diagram
S m o o t h i n g
C i r c u i t F u l l W a v e
R e c t i f i e r C i r c u i t S m o o t h i n g
C i r c u i t S w i t c h i n g
C i r c u i t
A C V o l t g e I n p u t
F i l t e r C i r c u i t
+ 1 2 V D C
R e g u l a t o r I C
+ 5 V D C
R e g u l a t o r
C i r c u i t
O v e r C u r r e n t
P r o t e c t i o n
C i r c u i t
S m o o t h i n g
C i r c u i t
+ 2 4 V D C
C o n t r o l C i r c u i t
+ 2 4 V D C O v e r
C u r r e n t P r o t e c -
t i o n C i r c u i t
+ 5 / + 1 2 / + 2 4 V D C
O v e r V o l t a g e
P r o t e c t i o n C i r c u i t
+ 5 V D C
+ 1 2 V D C
+ 2 4 V D C
T o t h e M a i n B o a r d T o t h e S t a r t B u t t o n