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Greetings- I came across a quad of 9 pin miniature 7719 tubes and I can't find any information on them. For a change, I actually have the tester settings for them, trouble is, I can't find any info after searching in all of the logical places. I beleive that they are triodes, but I'm not positive. Any idea on where to find the data? Thank You, wpod
Follow Ups:
According to my G.E. tube manual, the 7719 is a medium mu triode with a gain of 25. Harry
try this, tung-sol reference
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If you have a spice 3f4 simulation computer program, here's a space model of this tube:* 7719 Spice 3F4 model
.SUBCKT X7719 P G KBp P K I=(0.02155032103/1.0e3)*uramp(V(P,K)*ln(1.0+(-0.02409617047)+exp((4.11077476)+(4.11077476)*((29.68431589)+(-226.3229273/1.0e3)*V(G,K))*V(G,K)/sqrt((4.564710556e-006)^2+(V(P,K)-(5.978004682))^2)))/(4.11077476))^(1.625508506)
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