Re: A bit of Odd ware for the bench
|
The capacitor vale is critical, to make the transformer resonate on frequency. The high power factor is due to losses incurred in this type of regulation. If the capacitor has no leakage, leave it alone. The capacitance is critical, to make the transformer resonate at line frequency. When we had to replace CVTs in equipment in the Army, they always came with a new capacitor, and a warning to use it with the new transformer or the warranty would be voided. Also, be aware that the output is not a pure sinewave, so many meters will not show the RMS value. On Mon, Feb 20, 2023 at 11:16 PM Eric <ericsp@...> wrote: I have a new to me Sola constant voltage transformer. I am curious as this is a VERY vintage model it has an output at 115 Vac. I am hoping to use this to soften the power line in for some of my tube testers so that i can take some of the stress off the line adjust pots in the testers as they are becoming unobtainable. However being new to this gear I am not sure what is "normal operation" and should I change the cap. It has an extremely large non polar 16uF cap at 660 Volts. This is a bathtub oil filled capacitor. Also the input characteristics are HORRINDUS under no load it is burning about 84 Watts of power. But it is happily supplying 118.5Vac to a dmm and nothing else. It also has an appauling power factor of about .224 |
Michael A. Terrell