Cayin 270 Schematic

1

2

3

4

5

6

7

8

F F

C415

C424

2.2uF

R101 1K

C437

224

R103

3.3k

R105

10k

Q202

DW107

1W24V

Q201
K389

R102

39P

100K

R109
16k

Q204

C425

224

C2240

1

2

3

R106
200

C2240X2

R109
15k

R110
15k

C2240

Q205

Q203

R104

3.3k

7

5

R107

R128

100

E E

D D

IN

C C

B B

VR101

200

R111
100

Q206

Q207

B649

B649

D101
IN4001

R112

R113
820

R114

6.8k
680

VR102
1K

D102
IN4001

6

R127

27K

1k

470uF/100V

C412

Q216
D669

R115

6.8k

470uF/100V

DW101
1W24V

DW102
1W24V

C416

C411
10P

R116
820

R137
680

1W24V

1W24V

Vout

Q219
7815

GND

Q209

2SA1930

DW104

DW105

Vin

GND

Vout Vin

7915
Q220

Q208

2SC5171

Q217
D669

C411
104

Q210

C414

Q213

104

R119

2.7

R117
20

R118
20

R122

2.7

A1943

C5200

R139

0.25

R134

0.25

Q211

+70V

R120

2.7

R123

2.7

Q214

C5200

A1943

R135

0.25

R140

0.25

C433

C438

470uF/25V

0.1uF/100V

3

AC

+

B01

25A/100V

4

AC

-

0.1uF/100V

C435
C434

0.1uF/100V

4

AC

­B02

5A/100V

3

AC

+

C436

0.1uF/100V

B03

4

-

3

+

5A/100V

D4

D3

R147

3.3K

100K

R143

10K

C405

C407

-70V

C404

0.1uF/100V
GND

C403

0.1uF/100V
+70V

R144

220uF/50V

10000uF/63VX2

10000uF/63VX2

10K

D107
IN4001

1

6

IC3

2

C431

C406

C409

6800uF/100V

C402

C401

6800uF/100V

R146

12K

84

R149
39K

7

C432

220uF/50V

3

uPC1237HA

5

+55V

C410

0.1uF/100V

GND

C408

C5200

CBB0.1uF/100V

Q212

C419

R121

R142

680

2.7

R136

0.25

R124

2.7

Q215

-70V

0.033uF

A1943

C428

C427

0.033uF

R141

0.25

CBB0.1uF/100V

R138

R125
33

C418
10000uF/63V

Q218
9015

10K

C420
10000uF/63VC421

L1 13uH

R126

3.3/3W

+55V

D105
IN4148

-55V

D106
IN4001

0.1uF/100V

-55V

OUTPUT

J1

C429

4.7uF/25V

C430

100uF/50V

R148

56K

R145

TRANS
OB112

1

2

POWER SW
5A/80A250V~

2

1

2

AC

1

AC

D2

D1

F6A250V~

FUSE

AC220V~

50Hz

A A

1

2

3

4

5

6

Title

B

Date: 5-Mar-2001 Sheet of
File: D:\TEMP\270P.SCH Drawn By:

Cayin-270P

Number RevisionSize

7

8