| Ciu |
Hello !
I saw in the schematics of the PSU for DAC's output, something unusual .
The audio output stage(one side) is made with 2 OP Amp AD712, mounted in differential ; the PSU is made of 2x 7815 (Pos rail), 2x 7915 (neg rail )
I don't know why 2 voltage regulators TO220 (1.5A each !) connected // are needed ? Is there any advantage in such topology ?
Thanks for any advice
R.C. |
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| yusuf |
| where can I find mentioned schematic |
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| Ciu |
This is the scheme, with 2 x 7815 (not 7805) connected // to supply One AD712
R.C. |
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| BWRX |
| Theoretically lower output impedance... although I don't know how much it would help considering there are already two large electrolytic caps on the output. |
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| Ciu |
I intend to swap these regulators, with a home-made board, a lm317 (better output noise ) and caps ,solid tantalum 20µf on output.
For the ajusting level output, I have the choice :
_Resistors with 10µ cap //
_Tl431, as the reference source
Any comments ? |
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