Detailed Product Description

The power triode RS 3500 CJ is a RF power triode designed specifically for industrial applications. This tube uses a coaxial design and metal-ceramic technology. This triode is designed to operate in CW mode. For operation in pulse mode, the parameters depend on each equipment characteristics, contact us for specific information. The RS 3500 CJ is a water cooled triode. Its mainly used as C self-oscillation for the industry high frequency heating equipment. Max oscillator power is 750KW.

Electrical characteristics

Filament thoriated tungsten

Filament voltage (+ 5 %, - 10 %)   17.5 V

Filament current                           510 A

Surge current                           1 530 A max.

Capacitance:

 grid-anode                                           135 pF

grid-cathode                                    350 pF

cathode-anode                               10 pF

Amplification factor                   21 approx.

Transconductance (Va: 4 kV, Ia: 10 A)

180 mA/V approx.

Mechanical characteristics

Operating position vertical, anode up or down

Weight                                     67 kg approx.

High                       688.5mm max.

Diameter                   310mm max.

Maximum ratings

Frequency                     30 MHz

Anode voltage:

up to 15 MHz                              18 kV

from 15 to 30 MHz                      14 kV

Control-grid voltage                  - 2.5 kV

Control-grid current (F < 15 MHz):

at full load, CW                          11 A

at no load, CW                           14 A

Peak cathode current, CW        350 A

Anode dissipation                     300 kW

Grid dissipation:

up to 15 MHz                             7 kW

from 15 to 30 MHz                     5 kW

Grid resistance (at blocked tube)  3 kΩ

Cooling

Anode cooling water

Cooling water inlet pressure    5 bar max.

Water inlet temperature         35 °C max.

Temperature at any point on tube envelope 220 °C max.

Air flow on tube terminal side    5 m3/mn