Electron tubes

Tubes with tungsten cathode:

• Triode type TO1 with external glass wafer
• Triode type T03 with internal glass wafer
• Tetrode Q01 with external glass wafer
• Special duodiode type D01 with internal glass wafer
• Noise diode type DS1
• Negatron type N01 with internal glass wafer

Tubes with barium oxide cathode:

• Triode type TO2 with external glass wafer
• Triode type T02o with external glass wafer

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