Output voltage difference

Hello everyone! Have any of you found a small / any difference between the output voltage that your regenerator displays and the one you measure in its outlets? I have a P15 programmed for 230V output and at the same time it displays 229V for the output voltage while I measure about 231V in any of its outlets. Anyone?

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Hey Jomal…indeed there are days when incoming is either higher or
lower than outgoing…The P15’s output can be adjusted to
a particular preset voltage of your preference. As an example
my incoming can vary from 119 to 123 volts so I preset my P15’s
output voltage to 120 volts…

You can set the output voltage from your setup screen options.

Hope this helps

Hi, I think I was misunderstood. I mean I set the output voltage to 230V, the equipment shows a value of 229V and the value I measure is 231V. So there is a difference of ˜2V (actually it’s between 1,3-1,7V). However when I compare the input voltage differences, they are less than 0.2V. That’s it.

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It is most likely a difference in accuracy calibration and tolerance range of the two volt meters.

Hi, @Baldy. I would say it makes sense, but as I said, the difference is much lower when I compare the input voltage my P15 displays and the one I measure from the wall outlets.

Maybe the difference in output voltage is due to the point where it’s measured. The P15 might measure it from right after the regenerator output, while I’m measuring it from the equipment outlets.

Welcome to the real world of voltage regulation/stablization circuits and feedback loops. The P15 has a speced regulation tolerance of 1 V (my Furman line stabilizer is similar btw). Add to that the calibration accuracy of a rms meter circuit (not typically specified for any products of this type) … I’m not surprised and it isn’t indicative of a fault. Relax and enjoy your system!

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Sorry my friend …I didn’t read correctly…

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I have never measured the output with a voltmeter, but when I set the P15 to 230V, the output field reads 229V, just like your P15. But that 229V is flat and steady.

In my case, depending on time of day or night, my voltage could peak to 239V and dip to 224V, so I am happy with stability and do not mind a volt or two :smile:

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I’ll bet that the onboard volt meter may have accuracy of ±1%. That would explain the 2 volt difference you are seeing. On my 120v unit I have to set the requested voltage at 121v to get 120v metered output. I have not measured the outlets with a voltmeter though.


When I set the P15 to 231V, PowerPlay shows 230V, but the onboard voltmeter reads 231V. The system sounds great and makes me :smile:

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@Serhan I’m not sure but I think the output voltage PowerPlay shows is either an average of several samples read or just a single reading made in an one hour interval.

Anyway, the P15 (and P20 as well) is an awesome product and I’m also very happy with it. In my particular case I set it to 228V and get what I want, a 230V output.


FWIW, PowerPlay’s data points are based off an average. I forget how often we take it, but when we chose it, the resolution seemed more than proficient to me.

PowerPlay graphs show moving greys in distortion and voltage, but the blue lines in both as ruler straight.

Mains voltage seems to be behaving this week :grin:

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You have remarkably clean power coming in.

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Indeed , am quite fortunate. From memory, THD never exceeded 1.5 and my supplied power is (115 phase 1 + 115 phase 2). But some weeks voltage goes up to 238 n the morning, then down to 224 in the afternoon. So good regulation is all I am after, and I cannot stop admiring that flat blue line at 230V and the steady frequency response 24/7.

The voltage regulation is amazing, and the steady input makes a substantial difference in the sound. I, too, admire that flat blue line. :slight_smile:

Here’s what it looks like in a crappy part of town


Similar to mine, but I typically do not see over 5% THD.

I do not know why, but until recently I was seeing no more than 3% THD.