What to do with my tubes !?

Lofi Ninja · Joined: Oct 25, 2008 Posts: 143 Location: Jupiter

Ppl. I just dug out, my box of tubes from the back of my junk pile.
I've never made anything with tubes, but I really love the orange glow! I WANT IT! I NEED IT! I'm thinking pre-amp or something..

I do realize the "Don't design around what you got" speech.. But really most of the stuff I got is the junkbox kind..

Tubes I got ;

2 x MiniWatt Ecc81
MiniWatt 85A2
Valvo EBC81

Hmm, just noticed the writing on the rest is gone.. 11 tubes Sad

Altho I can se 2 of them are single triodes..

Do you have any suggestions ? Since, the supply is very limited it's going to be single stage and it sounds like shit but I NEED GLOW..

andrewF · Posted: Sun Nov 30, 2008 3:23 pm Post subject:

why not use the ECC81 dual triodes for a 'crushed glass' dual tube oscillator. they sound incredible. The thread is on this diy forum.

The 85a2 is not much use to you, unless you are using a >100V PSU.

you should be able to realise a simple pre-amp with the ebc81.....there is a simple cct on page 2 of this datasheet
http://www.mif.pg.gda.pl/homepages/frank/sheets/030/e/EBC81.pdf
it is for 250V supply, but see how you go on low voltage Smile

Lofi Ninja · Joined: Oct 25, 2008 Posts: 143 Location: Jupiter

Thank you very much! I think I will go with the crushed glass for now.. Shocked