Detailed Product Description

The FD-911S is a water-cooled triode, designed specially for industrial heating.

Output Power                     100KW

Anode voltage                   12KV

Anode dissipation                     80KW

General Characteristics

Filament voltage                12 V

Filament current                 205±15 A

Transconductance (Ia=12A)                   

≥45 mA/V

Amplification factor             25~40

Interelectrode capacitance

Grid- Cathode                    90 pF

Anode-Cathode                 1.2 pF

Anode Grid                      80 pF

Operating position Vertical, anode down

Height                                max 560 mm

Diameter                                   max 225 mm

Weight                               max 18.5 kg

Cooling Water and forced air

Water flow on anode         ≥120 L/min

Air flow on stem                 ≥200 M3/h

Water outlet temperature ≤55

Max temperature at seal   ≤250

Maximum ratings

Filament voltage           max 12 V

Filament surge current              315 A

Anode voltage                   max 15 kV

Anode dissipation power   max 80 kW

Grid dissipation power              max 2.6 kW

Operating frequency          max 26 MHz

Typical Operation

Anode voltage                   12 KV

Grid bias voltage                -600 V

Anode current                    11.5 A

Grid current                        1.6 A

Driving power                    3100 W

Grid resistance                   375 ohm

Driving voltage                   1650 V

Output power                           100 kW