Phase noise through voltage regulators using feedback - anyone?
Phase noise is jitter specified at various frequencies away from the fundamental (carrier) in dBc.
The power supply will have an effect, but it depends on the frequency.
The most important factor is the quality of the crystal itself.
Class A power supplies do not have feedback so produce less.
Class A has nothing to do with feedback, it means the active device(s) are conducting all the time and not switching off.
All linear power supplies are class A.
Is this one of the black art secrets to a good sounding clock implementation?
Haha - there are quite a few secrets, and at this stage they will remain that
Quite clearly the Zen clock transcends the el cheapo nasty 40 cent crystals fitted by the manufacturer and then some, apparently battery supplies are noisy according to some, whats the views here at the killer dac forum, Terry?? Danny?
V
Zenclock has discrete regulator after battery. The noise of these regulators would a lot less than the battery
itself. They are super low noise. The design of the regulator has an effect on the sound, I don't completely
understand what the reason is I just know certain reg designs sound better for clocks.
FWIW There are more clocks coming very soon. They are being made right now.
Z