!
!
Meridian 3
16
5.2 Pow
e
r/USB Bo
ard
EMI filter
PWM Control
T
O
P266E
G
(IC90
1)
T
ran
s
for
mer
AC input
16V
5V
Bridge
Re
ctifier and
Filter
Feedb
a
ck Ci
rcuit
Rectifier
Diod
e
s
Photoco
u
ple
r
(IC90
3)
Audio Amplifi
e
r
IC
AP
A2071
J
I-T
U
G
(IC60
1)
ENA
Feedb
a
ck Ci
rcuit
LED Bar
Boost Ci
rcuit
12V
OVP
Circuit
Setup-u
p
Co
ntrolle
r
TA
9
6
9
0
G
N
(IC80
1)
DIM
S
p
eaker
Audio in
USB Board
Hub Controlle
r
IC
USB251
4B-A
EZG
(U7
5
2
)
16V
USB Up
stream
USB
D
o
w
n
s
tr
eam
Earph
o
ne