Pushing the limits of TDA1543 NOS DAC - Page 15 - diyAudio
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Old 27th November 2011, 10:50 AM   #141
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Quote:
Originally Posted by Peter Daniel View Post
Here are the regulators. I'm using two separate 5V regs for receiver's analog and digital sections and 8.3V for the DAC chips. If using a single DAC chip (unbalanced topology) the current setting resistor should be 3R8.

Except for 3 highlighted locations all the parts are the same.

For best results, the parts choices are critical.

This shunt regulator was developed by Bobken.
Is this the same 5v, as you did on your shigaclone?
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Old 29th November 2011, 12:38 PM   #142
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Yes, it's the same.
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Old 25th December 2011, 05:20 PM   #143
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Dear peter.
For making your 5v regulator. Please can I ask for a part list?
After transformer. Is it 2*2200uf bg fk and 10uf bgn cap I need? Looking at your fine drawings I read it like this 2200uf-15r resistor(wattage?)-2200uf

I will use it for shigaclone 5v regulator/ hoping I will get further improvement
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Old 25th December 2011, 07:02 PM   #144
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Yes, that's correct.
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Old 28th December 2011, 08:05 PM   #145
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Peter,
I am going to try the SE version of this in my CD player using on board chip and I2s from SAA7210 chip fed directly to Tda1543. I can find all the parts except for the 482 resistor for the power supply. Is this the same MK132 as the others or is OK to change? Parts connexion and Percy do not have this value.
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Old 28th December 2011, 08:17 PM   #146
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I guess you mean 428R? The exact vale is not critical, use anything close to it. I use 2 x 220R in series.

Peter
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Old 28th December 2011, 08:49 PM   #147
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THanks
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Old 29th December 2011, 12:58 AM   #148
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Peter,

Also thanks. I was about to order those resistors.

Also for both you and Bobken, I posted a question about the 'Bobken' regulator on this thread:

Pushing the limits Regulator

In case ya'll didn't see it.

TIA!

Greg in Mississippi
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Old 29th December 2011, 11:22 AM   #149
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Peter, Sorry to be irritating, but if I go with Mills over Panasonic, I can save an extra order from Digikey for two resistors. I know you guys have stressed parts throughout, but it seems that even between the two of you, there is some difference in selction. All else being the same, willl the Mills resistor affect sonics in a ngeative way and have your guys tried them in the current setting postition?
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Old 29th December 2011, 03:54 PM   #150
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Using Mills is perfectly fine as you are changing other aspects of design anyway.
Please note that for a single DAC chip, the current setting resistor should be 3R8
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