PY 81 as power rectifiers?

[Terry]

I have an idea. I will lose the 15volts and connect the centre tap to chassis, so the 15 volt section just runs the heater?

Great minds think alike! *

I was just going to post that but, going through the other previous posts, I see that you beat me to it!

* Before someone else says it, there is another, contrary adage: fools seldom differ!