Elektor_Mag_-_January-February_2021

68 January & February 2021 http://www.elektormagazine.com

IC2

4

3

OPA170^1

4 IC6

3

OPA170^1

4 IC5

3

OPA170^1

IC4

4

3

OPA170^1

R14

12k

0.1%

R131k

0.1%

R26

12k

0.1%

C 5

470p

C10

470p

DT3

G

T5

S

D

G

DT4

G

T6

S

D

G

T1

D

G

T2

S D

G

C 9

12n

D 2

BAS316

D 1

BAS316

R19

270

R29

270

R22

1k43

R12

2M7

R 7

2M7

R 2

2M7

R 4

2M7

V-HIGH

V-LOW R11

1k5

K 1

D 4

GPA1603

D 3

GPA1603

D 8

GPA1603

D 7

GPA1603

R34

470

BAS316D14

R101

10

T11

BC848C

T13

BC848C

C33

4n7

R38

1 k

T12

BC848C

T14

BC848C

T10

BC858C

R35

470

R41

2k2 2k2R43

1kR50

R39

18k

R42

220

D 5

BAS316

K 1

C39

100n

R100

39

VRP

R15

274

0.1%

R16

274

0.1%

R27

274

0.1%

R28

274

0.1%

C 8

82n

R17

12k

0.1%

R32

12k

0.1%

C 4

1n8

C12

1n8

T8

D

G

T7

S D

G

R18

12k

0.1%

C 6

1n8

R231k5

0.1%

R241k5

0.1%

R25

12k

0.1%

C11

470p

R20

100

5

2

IC2

5

2

IC4

5

2

IC5

5

2

IC6

C13

100n

R30

150 VRP

T1...T8 = BSH105

C26

100nR66

(^150) VRM
IC8
4
3
OPA170^1
4 IC12
3
OPA170^1
4 IC10
3
OPA170^1
IC9
4
3
OPA170^1
R52
12k
0.1%
R511k
0.1%
R67
12k
0.1%
C21
470p
C24
470p
DT16
G
T18
S
D
G
DT17
G
T20
S
D
G
T22
D
G
T23
S D
G
C27
12n
D10
BAS316
D 9
BAS316
R60
1 k
R76
1 k
R62
00065
I-LOW
I-HIGH
R53
274
0.1%
R54
274
0.1%
R68
274
0.1%
R69
274
0.1%
C23
82n
R55
12k
0.1%
R71
12k
0.1%
C18
1n8
C29
1n8 T21
D
G
T19
S D
G
R56
12k
0.1%
C22
1n8
R631k5
0.1%
R641k5
0.1%
R65
12k
0.1%
C29
470p
R58
100
T16...T23 = BSH105
F1
10A
5
2
IC8
5
2
IC9
5
2
IC10
5
2
IC12
C14
100n
R36
(^150) VRP
C30
100nR72
150 VRM
IC3
4
3
1
5
2
OPA170
R 1
100
R 5
12k
0.1%
R 9
12k
0.1%
R 3
1
R 8
1
R21
1
R 6
12k
R10
15k
R48
10
C19
100n C 1
(^4) 16V 7
C 3
(^4) 16V 7
C 2
(^4) 16V 7
C 7
(^4) 16V 7
IC1 = TL431
IC1
VRP
TP1
TP3
TP2
TP7
SJ3
SJ4
TP4
R47
10k
SIGOFF
SIGOFF
GNDOFF
GNDOFF
VX25
IX25
VX5
IOFS IX5
VOFS
Figure 2: Main board schematics.