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RE: You may be


HI ! Thanks a lot for the kind and helpful reply.
yes ! absolutely.
But almost never the manufacturers provide clear specifications and even more rare are noise spectra.
So it is a long and costly buy and test method.
As i said i have an interface that needs 12VDC/2A
The stock psu is a cheap and little smps thing.
With the stock psu i see spikes (honestly low in level but still evident) standing out above the nicely low noise floor.
I am about to test other and supposedly better psu (switching and linear) to see if the spikes go away. Maybe not.
So in the end i need a very clean 12VDC/2A power supply.
I understand that usually the problem with many psu is some residual high Hz ripple.
Unfortunately i get only spectra up to 48kHz. Better the nothing.
The spikes are always at the same frequencies even changing psu (i have tried only different cheap smps by the way. I will start soon with the linear one depicted in the post above).
Thanks again.
Kind regards,
bg

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