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Your position: Home / Electron Tubes / Industrial heating tubes
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Triode 7T84RB High Frequency Welding Machine Metal Ceramic Vacuum Tube China Electron Tube

this triode mainly used as an oscillator for industrial high-frequency heating equipment
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Introduction:
1. The 7T84RB type electron tube has a cermet structure, a thorium carbide cathode and a forced air-cooled triode. The maximum anode dissipation power is 1.5KW, the maximum operating frequency is 110MHz, and the output power is 3.8KW
2. Mainly used as an oscillator for industrial high-frequency heating equipment
3. It can be used interchangeably with the 7T84RB tube produced in Japan

一、Characteristic parameter
Filament voltage 6.3V Filament current 22A
Transconductance (Ia=1A) 4.5mA/V Amplification factor 17
Interelectrode capacitance The gate - anode 12pF  
The gate - cathode 22pF  
Anode-cathode 0.4pF  
Maximum operating frequency 110MHz maximum height 190mm
The maximum diameter 130mm Weight (approximately) 1.0kg
Installation method Vertical/anode down or up Cooling method Forced air cooling
Minimum cooling air volume 3.5m3/min Minimum static pressure 127Pa
Maximum inlet air temperature 45℃ Maximum temperature of shell 250℃
Maximum temperature of electrode seal 250℃    
      
二、Use limit
  Continuous use Intermittent use
Anode DC voltage 7 7kV
Anode DC current 0.8 0.9A
The gate DC voltage —1.5 —1.5kV
The gate DC current 0.2 0.28A
Anode dissipation power 1.5 2.0kW
The gate power dissipation 70 90W
 
三、RF power amplifier and oscillator (Class C telegraph) Typical working conditions
  Continuous use Intermittent use
Anode DC voltage 5 6.5 7kV
Anode DC current 0.65 0.75 0.88A
The gate DC current 140 150 190mA
The gate impedance 5000 6000 6000Ω
Anode output power 2.5 3.8 4.7kW








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