In case you haven't seen Derek Waltons JE Labs 300b project. A really excellent presentation of Joseph Esmillas (JELabs) SE 300b. Worth the look http://indigo.ie/~walton/300b.html Deluxe Edition: http://indigo.ie/~walton/300bmk2.html Doesn't the 811 take a LOT of B+ voltage? Can't remember for sure. It's a consideration. I remain, |
Hi Eldragon There area ton of 300b circuits around if you go from scratch. You have probably already seen them but below is a handy collection in one place. Have you made one before? I would suggest doing it on breadboard instead of a chassis at first and then it is easy to change and modify. At least that has been good for me. *** Cunos Triode Page: a nice collection of 300b schematics: http://www.triode.club.tip.nl/ I have a collecion of online tube diy materials that I would be happy to share. If you'd like a copy drop me an email. I would suggest you look at some parafeed for the OP and constant current stuff for loading the tube. It works. I think the circuit/transformer choice is at least as important as the tube. I'm still new and learning though. Cheers I remain |
