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75KW CL band CW Magnetron

Specification for the 75KW CL band CW Magnetron:

The CW75 is a 75KW CL band magnetron with a fixed-frequency non-integral-magnet metal-ceramic structure directly-heated by a pure tungsten cathode, high power continuous-wave magnetron with a wavelength of 33cm. The anode is water cooled and cathode by air. The tube connected directly with waveguide BJ-9 mainly is used in wave heating as power source.

Main performance:

Frequency                 915MHz±10MHz

Pout                          ≥75kW(V.S.W.R≤1.1)

Anode voltage           17kV~18kV                      

Anode current           5.0A

Filament voltage       12.6V±0.5V

Filament current      115A

Warm-up time          ≥180s

Magnetic field          0.12T

Operating conditions:

Anode cooling water flow rate                 ≥0.018m³/min (final temp.≤ 50℃)

Anode cooling water resistance               ≥4Kω/cm³

Out –leading cooling air flow rate          ≥12m³/min

Output window cooling air flow rate      ≥0.7 m³/min

Ambient temperature                             room temperature

L.V.S.W.R:                                             <1.5

Warm-up filament current                     115A

Filament heating time                            ≥180s

Operating filament current                    85A

Anode voltage                                         17.5kV

Anode current                                         5.0A

Limit parameters:

                                                         Min.         Max.          Unit       

Filament surge current                                      250               A

Filament heating current                                   116              A

Filament heating time                         60                               s

Anode voltage                                                   18.5             kV

Anode current                                     2            6                  A

L.V.S.W.R                                                       1.5        

Anode cooling water flow rate            10                          m³/min

Anode cooling water final temperature             50               ℃

Metal surface temp.                                         130             ℃

Ceramic surface temp.                                     150                ℃

Typical operating conditions:

Heating filament current                            115A

Operating filament current                         85A

Anode voltage                                              17.5kV                      

Anode current                                              5.0A

Pout                                                              75kW

Frequency range                                          915MHz

Magnetic flux density                                  0.12T

Tubes not used for a long period of time or new tubes should be refined before operation, heat the filament, adjust I_f=115A, add the high-voltage after 15 minutes:

U_a           I_a            I_f                  t

11kV         2A           110A       15minutes

12.5kV      2.5A        105A       15 minutes

13kV         3A           100A       15 minutes

14.5kV      3.5A         98A        15 minutes

15.5kV      4A            95A        30 minutes

16.5kV      4.5A         88A        30 minutes

17.2kV      5A            82A        60 minutes

The min. anode current of the magnetron is 2A while its operating.

 Outline and dimension:

 Dimensions are in mm.

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Copyright © 2001 GREENSTONE USA All rights reserved.
Revised: July 05, 2012