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Pentode

FU-81


FU-81
FU-81 ia a power glass in direct thermal carbonization thorium-tungsten cathode emission pentode,anode cooling method is natural cooling,the maximum anode dissipation power is 450W,the maximum operating frequency is 50MHz,the pipes are mainly used for radio equipment and medical equipment for power amplificatiopn or oscillation.



Note: generally under matched load can be naturally cooled,but the equipment must be well ventilated,if it a non-matched load,high pressure,high-frequency conditions required for forced air cooling,ventilation should be through the outlet from the tube at the bottom of under the previous air.

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