Davespectral, I suggest that you connect the strobe to a different outlet (not one supplied by the true-RMS UPS), then any frequency variation will be easy to see.
Have fun
Have fun
Use Battery Backup For Preamp and TT?
Hi Jea48. Thanks for the link. I'll read it. Yes, I thought to do this properly, I would have to find one with a GOOD sine wave. It also occurred to me that if the wave isn't correct, how do we know it's a TRUE 60 Hertz? What if it's 59.2 or something? The strobe would STILL show it as being accurate I think, because the TT strobe would be off also. LOL |
Most cheap battery back up units, when in the inverter mode, put out a square wave not a true sine wave. Square wave sucks..... A "True UPS" will put out a true sine wave. They are costly though.... Found this doing a search on Google http://www.jkovach.net/projects/powerquality/ . |