Circuit diagram
1 2 3 4
A
B
C
D
E
F
G
H
4321
H
G
F
E
D
C
B
A
Title
Number RevisionSize
A2
Date: 4-Jul-2018 Sheet of
File:
\\Sonodata\shinde\Project\VLP series power supplies\NEW VLP with OVP\PCB and CKT\VLP - OVP PCBs
Drawn By:
R3
390E,1/2W
C25
220uF/100V
R1
4K7
C16
10KPF
R2
220E,1/2W
C17
10KPF
R4
10K
R15
100E
CIRCUIT DIAGRAM OF VLP OVP FRONT BOARD
R16
100E
SIL/16/0
R5
4K7
00
R6
4K7
PRASAD
R7
1K5,1%MFR
AMEND
D1
S1J
--
R8
D2
S1J
C10
220uF/35V
C18
1000uF/16V
R45
33K
R26
10K 1%
R23
47K
V1
2N5551
25 P.P.M.
Z1
6.2V
C27
1uF/100V
D3
S1J
R32
10K 1%
D4
S1J
25 P.P.M.
C5
100uF/16V
R29
22K
C6
100uF/16V
Z4
9.1
Z5
9.1
R40
10K
R36
10K
D11
S1J
R37
3K3
R38
10K
Z3
12V
D10
S1J
SUPPLY TO DVM
SUPPLY TO DCM
R14
820E
P2
220E
C4
1uF/100V
-
6
+
5
7
8
IC4B
LM1458
R27
100E
-
2
+
3
1
4
IC4A
LM1458
IC1
LM336
P4
100K (CERMET)
P1
100K
PT4
50K
T1
BC846
R10
1K5
1
1
R9
33K
(TO OVP SETTING TRIMPOT)
R11
3K3
R18
33K
Control Winding
R19
220E
DPM Winding
From TXFR
D13
S1J
DPM Winding
To Base Drive
D12
S1J
On H/S PCB
100 OHMS Sense
C11
10KPF
To O/P +VE Terminal
To O/P -VE Terminal
C12
10KPF
C7
100uF/16V
P3
100K (CERMET)
C24
10uF/25V
R13
470E
C23
10uF/25V
1
2
CN5
1
2
CN4
CON2
C22
1000uF/25V
C21
1000uF/25V
D8
S1J
D14
S1J
Vin
1
GND
2
Vout
3
IC2 7815
-ve
-ve
Vin
1
GND
2
Vout
3
IC3 7915
+ve
+ve
FROM TXFR 15V SUPPLY
OVP VOLTAGE
INDICATION SWITCH
D6
S1J
C1
220/16
R17
39K
C3
1n
T3
2N5551
D51N4002
D7
S1J
R22
27K
C14
100KPF
R44
4K7
R24
15K
R25
2K2
C20
OPEN
P5
1K
V REF
6
N.I.
5
V
12
VCC
11
V OUT
10
CL
2
CS
3
INV
4
V-
7
COMP
13
LM723
IC5
LM723
T2
2N5551S
R42
4K7
R43
15K
R41 8K2
T102
TIP31
R21
5K6
C19
100n
CC CONTROL
16
17
R35
220E
R33
1K
R34
OPEN
C8
47uF/25V
C15
10n
C26
10n
OUTPUT +VE
OUTPUT -VE
PT1
50K
VCC1
P6
5K51
-
+
For Main O/P
From TXFR
(3-6V) Control Winding
Mounted on
The Heatsink
3-6V PUSH SWITCH
C9
1N
TO
(3 - 6V)
R20
12K
TO
(3 - 6V)
DVM
+
-
DCM
+
-
From TXFR
CH-A
CH-A
From TXFR
'G'
'H'
SW3 (4P2T) (CH-A OVP)
SW3
OVP CH-A/OVP
OVP CH-A 3-6V
OPB-
R31
6K8
R30
820E
AC7
+15V
AC8
AC9
3-6 SEC C
AC10
+VCC (3-6)
3-6B -
3-6B+
DCMB- DCMB+
DVMB+ DVMB-
THERMAL SWITCHTH1
LD3
D9
6V2
-
6
+
5
7
8
IC6B
LM358
-
2
+
3
1
4
IC6A
LM358
1
2
3
CN3
CON3
1
2
3
CN6
1
2
CN8
STM2
1
2
3
CN9
WAGO3
1
2
CN10
CON2
1
2
CN11
CON2
1
2
CN7
CON2
1
S3
TO 3-6V CAP +VE
C
C
NC
NC
NO
NO
SW2
SW_SL_DPDT
C
C
NC
NC
NO
NO
SW1
SW_SL_DPDT
C
C
NC
NC
NO
NO
SW3
SW_SL_DPDT
VLP 2403PRO (OVP) CH-A
VLP 2403PRO (OVP) CH-A
PT104
20K
C2
NR
C13
OPEN
PT3
CV LED
PT2
CC LED
TO BC640
EMITER
+12
R28
68K
1
2
CN12 CON2
1
2
3
CN2
CON3
1
2
3
CN1
CON3
Z2
18V
Z6
15V
LD1
OT LED
-6VB
C SENB
BDB
AC6
AC5
AC4
AC3
AC2 AC1
1
S2
1
S1
R39
OPEN
OPB+
R52
180E
D15
1N4148
C29
1MFD,63V
C28
1MFD
R46
OE
R47
68K
R48
8K2
R12
1K5
D16
1N4148
LD2
LED
100K
R49
NC
R50
47K
R51
220E
RLA
RL-1P2T
RLB
RL-1P2T
1
S12
1
2
CN14
CON2
1
2
CN13
CON2