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![]() Bill ) writes: Steven Swift wrote: A while back there was a 12v tube thread. I saw this: http://www.thamesandkosmos.com/products/ra/ra2.html advertized in September Scientific American. The ad (on the builditplayit.com site) says it uses a "double triode" and requires 8-AA batteries (nominally 12V). I wonder if it is a 12V tube kit. Perhaps a 12AE7 or similar. Anyone know? Can't speak for the kit but I know some guys have successfully used a plain old 12AT/AU/AX7 at 12 volts with acceptable results. -Bill There were a couple of articles in Popular Electronics in the early sixties about doing that. And oscillator and then an amplifier, if I remember the sequence properly. From memory, the author referred to them as "starved circuits". I have a vague memory of trying one of them in the early seventies, but I honestly can't remember if I did or didn't. Michael VE2BVW |
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