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SUMMER CIRCUITS COLLECTION

Simple Adapter

for SB Live! Player 1024

030

+5V

R1

IC1

TOTX173

3

R2

8k2

2

4

C1

K1

1

100n

K2

OUT

1

2

1

2

SPDIF0

SPDIF1

SPDIF2

SPDIF3

3

4

IC3.A

3

4

5

6

2

1

1

5

6

7

8

7

8

9

10

9

10

11

12

+5V

13

14

15

16

17

18

L1

19

20

IC2

JP1

21

22

TORX173

IN

47µH

23

24

SPDIF2

1

25

26

SPDIF1

27

28

3

29

30

C2

31

32

24

56

IC3 = 74HC04

33

34

100n

35

36

+5V

37

38

IC3.F

IC3.E

IC3.D

39

40

13

12

11

10

9

8

K3

1

1

1

14

C4

C3

IC3

100n

IC3.B

IC3.C

10µ

63V

7

3

4

5

6

1

1

000178 - 11

F. Brandt

The 2000 Summer Circuits Collection contained an adapter

that made it possible to connect the digital extension (PCB

990079-1 ) from December 1999 in the correct manner with

the ‘Sound Blaster Live! 1024’. This digital extension, fitted

with both coaxial as well as optical inputs and outputs, was

originally designed for the 12-pin expansion connector

(Audio-Extension-connector) on the ‘Sound Blaster Live!

Player (Value)’. The 1024 model has a 40-pin connector.

This circuit combines the two in a simplified fashion.

There is now only one optical input and one optical output.

Using jumper K2 you can select one of the four outputs.

Similarly, JP1 lets you select one of the two inputs. It

appears that Live!Ware 3.0 supports only the first input. For

those who are interested, the pin assignment details of the

expansion connector can be found in the help menu, or

with the aforementioned circuit description (‘Adapter for

SB Live! Player 1024’) in the 2000 Summer Circuits Collec-

IC3

L1

+5V

IC2

IC1

H2

000178-1

60

Elektor Electronics

7-8/2001

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SUMMER CIRCUITS COLLECTION

COMPONENTS LIST

Semiconductors:

IC1 = TOTX173

IC2 = TORX173

IC3 = 74HC04

tion. To make the connection to a Home-MD recorder a

Toslink-to-Toslink-cable is required. To link to a portable

MD recorder a Toslink-to-miniplug is necessary.

This simplified adapter has been specifically designed

for use with MD recorders, because these are usually fit-

ted with optical inputs and outputs only. The construction

of the circuit with the aid of the PCB design shown here

should be a piece of cake. The power supply for the circuit

is obtained from a small PC power supply connector, which

is connected to 4-way pin header K3. Pay careful attention

to the polarity when attaching the connector; the red wire

is the +5 V connection!

Resistors:

R1 = 4 Ω

7

R2 = 8k

2

Miscellaneous:

JP1 = 3-way pinheader with

jumper

K1 = 40-way boxheader

K2 = 10-way double row

pinheader with jumper

K3 = 4-way pinheader

Capacitors:

C1,C2,C3 = 100nF ceramic

C4 = 10µF 63V radial

Inductor:

L1 = 47µH

(000178-1

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