Behold, Tom Schlangen scribed on tube chassis:

Hi Gregg,

How about a 7812 with a Si diode in the ground leg ?

That works fantabulous :-)
But regulation goes to about 1% then.

When talking about regulated DC for heaters, CC makes more sense to me
than CV - it is even more gentle to the heaters :-)

Tom

Yes, I remember that from your GeeK ZonE posts. I'll have to try that!


--
Gregg "t3h g33k"
Adle-brained valveaholic