AN708

Vishay Siliconix

www.vishay.com

S FaxBack 408-970-5600

2

Document Number: 70581

FIGURE 1. Schematic for Universal-Input Power Supply

1N5822

Q2

2N7000

C11

4700 pF

C10

0.1

mF

50 V

MUR110

D1

+ C4

2200

mF

16 V

C5

0.47

mF

50 V

ac In

90 – 260 V ac

50/60 Hz

C17

0.1

mF

X

L1

8 mH

C19

0.0047

mF

Y

C8

0.0047

mF

450 V

+

C20

0.0047

mF

Y

C18

0.1

mF

X

C7

33

mF

450 V

T1

MUR110

D7

+ C21

2200

mF

16 V

C22

0.47

mF

50 V

+12 V, 150 mA

–12 V, 150 mA

RTN

RTN

18

97

R2

175 k

W

13

11

10

14

615

SENSE

OUT

BIAS

SD

5

4

16

12

Si9120

R9

2 k

W

R14

390 k

W

R4

10

W

R3

1 k

W

C15

N/U

R5

1.3

W

Q1

SMP4N60

C12

1000 pF

100 V

C14

1

mF

50 V

R10

130 k

W

D5

1N4148

D6

1N4148

D4

1N4148

R6

20

W/W

D2

+ C1

2200

mF

6.3 V

C3

0.1

mF

50 V

+5 V, 1.5 A

RTN

R1

10

W

C6

1000 pF

100 V

C2

1000

mF

6.3 V

+

L2

6

mH

C9

220 pF

R7

1.2 k

W

R8

680

W

R11

68 k

W

R12

8.2 k

W

Q3

2N4403

R13

75 k

W

R15

40.2 k

W

C13

4700 pF

D3

DB105

U1

R16

10 k

W

C6

1000 pF

D8