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Power Supplies for the TDA1541 DAC-Thorsten, anyone

199.43.12.2

Posted by Ryan on June 15, 2001 at 02:05:46

Hi All,

I have seen very little effect from using better power supplies on the TDA1541 DAC, yet I have seen posts here claimimg the opposite, i.e. that better supplies do make a difference.

Anyone that can shed some light on this from their experience?

For the record, I had teh following setup:

1. 300W toroid feeding fast soft recovery rectifiers
2. This was smoothed by 40 000uF (4x 10 000uF) caps
3. This then fed two regulators (fixed) 7815 and 7915
4. From the 7815, I derived teh +5V via a 7805 reg
5. From the 7915, I fed the DAC -15V and derived the -5V with a 7905 reg.

These voltages were fed to the DAC where the relevant power supply pins were decoupled by a 100uF Oscon, bypassed with a 0.22uF polyester and a 0.001uF poleyster.

When this setup was compared with a DAC being fed off the CDPs built-in Powersupply, there was no real discernable difference.

Any comments anyone?
Ciao
Ryan

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