3CW20,000H7

 Designed  for use as:
  • DC voltage or current regulator 
  • High voltage switch tube

 


 

Description
Maximum Ratings
Tube Numbering System
Warranty

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Description

Plate Dissipation ( Max ) 20,000 watts
Grid Dissipation ( Max ) 500 watts
Frequency for Mas Ratings (CW) 110 watts
Cooling Water and Forced Air
Filament Thoriated Tungsten
     Voltage 7.5 volts
     Current 99.0 amperes
Capacitances ( Gnd. Cath. Connection )
     Input 59.0 pF
     Output  .2 pF
     Feed-through 36.0 pF
Amplification Factor 200
Base Flexible Filament Leads
Maximum Seal and Anode Core Temperature 250o C
Maimum Flexible Lead Temperature 175o C
Maximum Length 20.70 in /  525.80 mm
Maximum Diameter 8.75 in / 171.40 mm
Weight ( approximate ) 12 lb / 5.5 kg
Operating Position Vertical, base up or down

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Maximum Ratings Typical Operation
Class of Operation Type of Sevice Plate Voltage (volts) Plate Current (amps) Plate Voltage (volts) Plate Current (amps) Drive Power (watts) Output Power (watts)
AB Cathode Driven RF Linear Amplifier 7000 5.0 7000 5.0 1540 24,200
AB Cathode Driven RF Linear Amplifier ( AM Service ) 7000 5.0 7000 2.4 330 5650*
AB Grid Driven AF Amplifier or Modulator ( two tubes ) 7000 5.0 7000 10.0 560 47,700

 * Carrier Power

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