Circuits Description - ELCOM Euro-2000T Alpha Service Manual

2. Circuits descriptions
2.1. Power supply circuits.
2.1.1. External power source - AC/DC adaptor.
•
•
•
INPUT
AC 230V/50Hz
Note: If the external power supply is connected to the ECR, the internal lead acid accumulator is charging even if the ECR
is turned off.
2.1.2. Primary power circuit.
•
•
•
CNN1
EF1
C22
1
2
EMI
FILTER
POWER
1u/35V
Euro-2000T Alpha/1000T
D1
T1
D3
TRANSFORMER
R1 R6
4k7 10k
D11 C1 C20
4
3
1N5822
U14
100n
330u/25V
Adaptor
+
-
Service manual
D2
RESETABLE THERMAL FUSE
C1
+
D4
C11 R36
68k
100n
R34
6k8
5 1
L1
2
MC34167
150u
D1
1N5822
CNN 1
OUTPUT
DC 12V
5
D2
1N5408
R48
4k7
C8
POWER
R49
10k
C12
100n
3300u/10V