Heres another thing one of endless things i never knew ...interesting
http://www.junkbox.com/electronics/lowv ... ubes.shtml
Moderators: Dave Moll, Steve Anderson
Steve Anderson wrote:Many years ago I had a few car radios that used 12V tubes, worked fine in the shed off a 12V supply...AM only those days. Early 70s, No FM in Victoria in them there days.
I had a 12V tractor battery that powered everything, lights (via an aircraft rotary converter), 12V soldering iron, you name it. I couldn't afford the cable to run from the house as a student, or all the electrical fittings.
Once a week I would drag it back to the house on a trolley I found somewhere and recharge it using dad's car-battery charger.
Eventually dad relented and had 240V AC installed...by a professional, not me!
Steve A.
There were a few that worked on 6V too if you had an old VW beetle...usually positive ground - the car that is...
An example of a space-charge tube is attached, note the maximum plate voltage is 30V!
Harry Dalek wrote:VW'S HAD A POSITIVE GROUND !
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