Majorcom: digiPRO 1200, Operating Manual, Page: 10 / 28

10
6
INPUT
BALANCED
H
C
G
OVER CURRENT P/T
FET
SHORT P/T
IM
PE
D
A
N
C
E
M
A
TC
H
IN
G
AUDIO LEVEL METER
+VBB
PWM
DRIVER
A.L
.C
H
.P
.F
H
.P
.F S
/W
TEMPERATURE P/T
PWM
DRIVER
+VBB
FET
IM
PE
D
A
N
C
E
SE
LE
TO
R
FET
FET
-VEE
B.A
M
P
-VEE
INPUT : 200 Vac ~ 240 Vac
F/G
EMI FILTER
ACTIVE INRUSH
CURRENT
LIMITING
ISOLATED
TRANSFORM
+85VDC
-85VDC
CURRENT SENSING
RECTIFIERS
&
FILTER
PWM
MAIN SWITCHING
RECIFIERS
& P.F.C
POWER
SWITCHING
ISOLATED
TRANSFOMER
RECTIFIERS
AC/N
AC/L
REMOT CONTROL
FAN LOCK &
PROTECTION
FEED BACK CONTROL
DETECTING
CIRCUIT
O.V.P / D.T.P
REMOT CONTROL
P.F.C / PWM
CONTROL
BATTERY ( + )
MAIN
SWITCHING
BATTERY ( - )
+12 V
-12 V
FAN AUXI Liary
FEED BACK CONTROL
O.V.P/O.C.P
&
P.W.M
Amplificateur Numérique Professionnel
AC/ DC SMPS
Schema Bloc (1CH)