In Reply to: RE: possibly something wrong in power supply . . . posted by Thorsten on December 11, 2014 at 21:32:36:
There is a possibility that the power supply circuit has an active ground drive circuit, and its internal series resistance is high and non-linear due to some defect.
Then, even with the feedback in the output stage, the DAC will show nonlinearity in low frequencies? Just my rough guess.
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Follow Ups
- defective active ground drive, for example - dave789 22:28:46 12/11/14 (1)
- RE: defective active ground drive, for example - Thorsten 22:59:06 12/11/14 (0)