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RE: Importance of Voltage Regulation

Posted by AbeCollins (A) on January 18, 2021 at 05:32:03

In Reply to: Importance of Voltage Regulation posted by Schlep on January 17, 2021 at 20:25:41:

Have you measured your AC mains? Unless it swings wildly then voltage regulation will not be of much benefit.

In SS gear like amps, the internal DC voltages are regulated where necessary so the amp's power supply can handle a reasonable range of input AC voltage from the mains. The AC mains voltage may have a more noticeable, but not necessarily detrimental effect on tube amps. The bias readings may differ at different AC input voltages.

You don't need a data logger to chart your AC voltage. You can take manual measurements throughout the day with a "true rms" DMM and jot them down on a sheet of paper.

AC Mains data logger:

My AC Mains voltage over night. Pretty solid:
Riding barely above and below 124-VAC. No worries here:

My raw AC mains output voltage vs output from my PS Audio P300:

The P300 gave up the ghost a couple years ago. But is my AC mains voltage something to be concerned with? Not in my case.

Edits: 01/18/21 01/18/21

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