Are these tubes any good?

[Zben3129]

6BX7...could be useful used somewhat like a 12au7 perhaps

And for the diode tubes, I'm not sure what the voltage drop (forward bias?) is, like silicons are about .9v and germaniums .3. If the tubes voltage drop is high it would probably be useless for clipping, and I can understand them being high as they are meant to run on 200+ volts (most of them).

Perhaps a car radio tube diode would present some options.

Zach

[petemoore]

  'verticle deflection amplifier'...sounds a bit outside the 'realm...

[DougH]

That's a tube for video circuits. I have some for horizontal deflection and etc. I have experimented with some of those for audio and they work. You have to research the specs and know how to apply them. I've come to the conclusion that tubes are tubes. A good portion of the "oddballs" can be made to work in guitar amp circuits in some form or fashion. You just have to figure out how to use them. I have some RF detector diodes I haven't really figured out what do with yet, mainly due to their really low current handling capability. But those are the exception.

Thanks for the offer, ballooneater, but I have enough oddball tubes of my own.

[ballooneater]

Regarding the tubes as diodes- I've looked at their forward voltages and it seems to be around 32v! 

Could I just put these tubes in any ol' circuit that uses diodes just for looking cool?

[petemoore]

Regarding the tubes as diodes- I've looked at their forward voltages and it seems to be around 32v! 
  That is a lot of signal swing to get happening for a clipper !
  RG wrote, but I forget exactly how that went...
  Could I just put these tubes in any ol' circuit that uses diodes just for looking cool?
  Sure, I was gonna mention that, they could be made to look cool somehow.
  Many of us have a bag of these, or box. I'm not sure how effecient they are as heaters, but clean heat they can make.
  I'm sure others have foraged through and built tubes like these into amp uses, I looked into doing something-anything with old oddball tubes, but the lack of reviews and schematics, also the power supply and other requirements for messing about with them...and the relatively low cost of more conventional tube types thwarted any further testing or usage.
  Every once in a while you'll find a number that has a data sheet that kind of matches an application, or find some 6v6's in boxes marked 7BQ5.

[beans_amps]

Look here : www.angelfire.com/mech/beansamps for a champ type amplfier using a single tube.  The 6T10 compactron.

Some others in there are interesting. 

Sean

[ballooneater]

Look here : www.angelfire.com/mech/beansamps for a champ type amplfier using a single tube.  The 6T10 compactron.

I'll start this project immediately!  I've been looking for one that used a tube I had because I'm not quite sure how to substitute them yet.

Thanks!

[beans_amps]

Hey,

I ask that you either reply here with questions and criticisims or to my email.  The email is the msn account posted on the website.  The front input FET used as a booster may need to be configured for higer gain depending on your personal taste.  Also I have discovered that the zener cn be raised to  the next higher voltage to give a touch more headroom.

Sean