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Space charge tubes Spice 3f4 models
I just made up a spice 3f4 model for the 12K5
space charge tetrode tube. These used to used in car radios to drive the output transistor, back in the late 1950's. I used two of these in push pull in an AA5 radio with all the usual tubes swapped out with the equivalent space charge versions. Produces about the same audio volume as that from a transistor portable radio. Various tube models: http://home.netcom.com/~wb2jia/tubes/spice.txt http://home.netcom.com/~wb2jia/tubes/spice2.txt http://home.netcom.com/~wb2jia/tubes/spice3.txt The 12K5 is at the bottom of: http://home.netcom.com/~wb2jia/tubes/spice4.txt |
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