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5

4

3

2

1

D

D

D1 1N4004 2 1

VR1 6 5 4 3 2 1 J1 CON6 +5V +16.5V -16.5V +48V D3 BR805D + C1 2200uF/63V + 3 VIN

LM317HVT VOUT ADJ 2 2 D2 1N4004 1 R1 243

+48V

1

+ R2 8.66K

C2 39uF/63VZ

C3 0.1uF

-

1 2 J6 CON2

Line Neutral

2 1 J2 CON2

+

C6 39uF/63VZ

C

1 2 3 4 5 J7 CON5

1 2 3 4 5 J3 CON5 C7 0.01uF C8 0.01uF 3 VIN

D4 1N4004 2 1
C

VR2

LM317T VOUT ADJ 2 2 D5 1N4004 1 R3 243

+16.5V TP3 TESTPOINT

120V Operation

1

1

+

C9 3300uF/50V

+ RV1 5KPOT_10T + C14 47uF/25VZ

C10 47uF/25VZ

C11 0.1uF

2 +

5 4 3 2 1 J5 CON5

+5V +16.5V -16.5V +48V

D6 BR805D

-

RV2 5KPOT_10T + C16 3300uF/50V 1

3

TP2 TESTPOINT

3 2 + C15 47uF/25VZ + 2 C17 47uF/25VZ

C18 0.1uF

1

ADJ

D7 1N4004 1

R4 243

B

2

VIN VR3 LM337T

VOUT

3

TP4 TESTPOINT -16.5V

B

1 D8 1N4004

2

D9 1N4004 2 1

D11 1N4004 1 2 J4 CON2 D12 1N4004 + D13 1N4004
A

VR4 2 1 3 VIN

LM317T VOUT ADJ 2 2 D10 1N4004 1 R5 243

+5V

1 2

1

C21 3300uF/16V R6 1K C26 47uF/25VZ

+

C22 47uF/25VZ

C23 0.1uF

+

A

2 1 D14 1N4004

1 2

PreSonus Audio Electronics, Inc.
Title

DIGIMAX Power Supply
Size C Date:
5 4 3 2

Document Number 400-DMAXPWR Tuesday, August 22, 2000
1

Schematic Path f:\digimax\orcad\digimaxpwr.dsn Sheet 1 of 1

Rev A