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2. 12AX7 - Wikipedia

   en.wikipedia.org/wiki/12AX7

   12AX7 (also known as ECC83 [1]) is a miniature dual-triode vacuum tube with high voltage gain.Developed around 1946 by RCA engineers [2] in Camden, New Jersey, under developmental number A-4522, it was released for public sale under the 12AX7 identifier on September 15, 1947.

3. List of vacuum tubes - Wikipedia

   en.wikipedia.org/wiki/List_of_vacuum_tubes

   A compactron used in television sets to supply power to the anode of the picture tube. This tube is very rare, and very special, because it implements an indirectly heated cathode, not connected to the filament. No data is found on this tube, except for the filament power (which is 3.6 volts, 0.225 amps) and the base (which is the 12GQ type).

4. 833A - Wikipedia

   en.wikipedia.org/wiki/833A

   The 833A is a vacuum tube constructed for medium power oscillator or class B or C amplifier applications. It is a medium-mu power triode with 300 watts CCS or 350 watts ICAS anode dissipation. The long grid and anode leads, plus high internal capacitance, limits this tube to 15-30 MHz maximum frequency.

5. Tung-Sol - Wikipedia

   en.wikipedia.org/wiki/Tung-Sol

   2012 Russian production Tung-Sol brand 5881 type vacuum tube. The 5881 is a beam power tube designed by Tung-Sol and introduced in 1950. [129] The 5881 is an improved direct replacement for the 6L6 in any equipment originally using the 6L6 and facilitates new amplifier designs producing greater power output than those using 6L6's.

6. CPI International - Wikipedia

   en.wikipedia.org/wiki/CPI_International

   CPI was founded in 1995 [2] when Varian Associates sold its electron device business (the original business of its founders) to concentrate on medical systems. Its major subsidiaries include Eimac (which manufactures new vacuum tubes for broadcasting, radar, medical systems, and other applications), Econco (a vacuum tube rebuilder), Beverly ...

7. AOL

   search.aol.com

   The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.