Halogen lamp transformers for tube amps. Is power factor an issue?

[T3sl4co1l]

Sounds about right.  Yeah, I mean, measure Vsec at the same time, it's gonna be the same ratio right?

Tim

[dazz]

OK, next I will rectify and filter and will load it to see how much power I can get out of it.
I have a wall power meter, but it doesn't measure power factor. Can I estimate it by comparing the power draw at the load vs the power draw at the wall, or will all readings be strictly real power?

[dazz]

Full bridge rectifier plus 100uF filter cap are in... and I have a whopping 17W of no load power draw at the wall. Seems like a lot, doesn't it? No load DC voltage is 310V, and it drops to 278V with a 10K ohms load. That's actually better than the simulation. There the voltage drops to 259V DC with the same 10K load.