[fabignoli]

Hello, sorry for my english, but in my humble opinion, a value of 20mf, for the first filter capacitor is too high. On mine, I've put capacitor of 2mf on 1-2. It's enough. because if you put sommething like 10mf and 20mf, the DC will be too high and it will be not good for the valve (the 80) because it will more work because of the charge and discharge of the first condenser.

After the choke (the second capacitor filter) you can put anything you want at point 1-4, 10mf or 20mf is OK. But not on point 1-2.

I've recently restart a philco model 20, I've written everything I've done here, but it's in french I'm sorry.


http://cfp.radio.free.fr/restaurations/p...lco20.html



best regards
Frederic ABIGNOLI