For Sale: NonOS dac (CS8412 / TDA1543) - diyAudio
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Old 8th March 2003, 03:14 PM   #1
hifi is offline hifi  Sweden
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Default For Sale: NonOS dac (CS8412 / TDA1543)

Hello,

Im asking 90$ for this NonOs dac based on CS8412/TDA1543 it uses TL431 Regulators, Oscon decoupling Caps for the CS and Panasonic FA:s for the TDA. And also SMD:s on the bottom.

Also the Loopfilter has place for the "monkeysekt" cap.

The series resistor for the TDA1543 TL431 regulator have been changed to a currentsource. (not shown in the pictures)

Also, there is a quite a hefty Capacitor board with RC filtering it uses 84600uF !

Im selling it to make Room for a TDA1541S1 dac. I also have some spare PCB:s.

thanks for looking.

/ Micke
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Old 8th March 2003, 03:15 PM   #2
hifi is offline hifi  Sweden
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Old 8th March 2003, 03:20 PM   #3
hifi is offline hifi  Sweden
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Old 8th March 2003, 05:03 PM   #4
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Quote:
The series resistor for the TDA1543 TL431 regulator have been changed to a currentsource. (not shown in the pictures)
Can you tell what the differences are compared to standard 78xx regulators or did you skip these from the beginning ?

BTW nice boards ! How much do you charge for an empty board ? If you design a PCB for TDA1541A I will be interested to buy one from you. For some time now I am busy with it but till now I get frustrated with the 100 nF caps and the 3 supply voltages

Designing single sided you know. Double sided won't give problems but is impossible for me to process.

Regards,

Jean-Paul
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Old 8th March 2003, 05:18 PM   #5
hifi is offline hifi  Sweden
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Hello,

I did not test any 78XX I donīt think they would peform better than the TL431, but with some mild violence on the bottom side they could easily be fitted (in T092 capsule that is..)

I would need about 20$ for a board?


/micke
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Old 9th April 2003, 07:13 PM   #6
Cobra2 is offline Cobra2  Norway
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Default Re: DAC

Hi!

What about the schematics / Bill Of Materials...?

Arne K
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Old 10th April 2003, 06:52 AM   #7
hifi is offline hifi  Sweden
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its comming by surface mail to you

/micke
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Old 11th April 2003, 01:54 AM   #8
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any impressions on it? is it sold yet? what voltages does it need?

could you post a parts list by chance if I buy a board? thanks!
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Old 11th April 2003, 05:08 AM   #9
hifi is offline hifi  Sweden
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1pcs BNC PCB MOUNT 75ohm
1pcs Pulse transformer 1:1
1pcs Red led
1pcs Green led
8pcs 0,1uF Ceramic X7R
3pcs 0,1UF Ceramic X7R SMD 0805
4pcs 2,2UF SCR
2pcs OSCON 15uF/25V
1PCS Good decoupling for the TDA1543 possibly to mount 2 RM5mm caps and smd underneath.
2pcs 47uH inductor

3pcs 2W resistors series for the TL431 These will determine the PSU voltage (or vice verse)
11pcs 1K
1pcs BC560
1pcs 75R
1pcs 0,047uF film
1pcs CS8412
1pcs TDA1543 (inverted possible to mound anonterhone underneath
3pcs TL431
3pcs 22R

thats what i can think of now, will post a propper list later.
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Old 4th June 2003, 12:45 PM   #10
Cobra2 is offline Cobra2  Norway
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Quote:
thats what i can think of now, will post a propper list later.
Parts-lay-out + schematics please...

I now have 2 boards waiting.

ArneK
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