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Station X · 21st Dec 2009, 2:16 pm

PJL.

I've just looked at some Philco circuits and the Model 60 seems to fit the bill. That uses grounded grids and a common negative bias supply.

As you say if further mods are needed we'll need a sketch/circuit of the components round the 75.

21st Dec 2009, 2:16 pm	#165
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,289	Re: Newb Stumped on a Derwent PJL. I've just looked at some Philco circuits and the Model 60 seems to fit the bill. That uses grounded grids and a common negative bias supply. As you say if further mods are needed we'll need a sketch/circuit of the components round the 75. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.