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Audio vacuum tube


212 type vavle is directly heated glass shell structure type thorium tungsten carbide natural cooling cathode triode.the anode maximum disspation power is 400W.the working frequency is 4.5MHz,when the frequency is not higher than 1.5MHz,c class cable state output power is 400W.
the vavle is suitable for audio amplifier for low frequency power amplifier,oscillation and also can be being done in the rf oscillator amplifier.



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