Description
The RS3080CL is a RF power triode designed for industrial heating applications. This tube uses a coaxial design and metal-ceramic technology. This triode is designed to operate in CW modes. For operation in pulse mode, the parameters depend on each equipment characteristics. Contact us for specific information. The RS3080CL is a forced-air cooled triode.
Electrical characteristics of RS3080CL
Cathode Filament: thoriated tungsten
Filament voltage (+5%, -10%): 11 V
Filament current: 205 A
Surge current (maximum): 615 A
Capacitances:
Grid to Anode: 46 pF
Grid to Cathode: 106 pF
Cathode to Anode (see note 2): 3 pF
Amplification factor: 19
Transconductance (Va: 4 kV, Ia: 3 A): 60 mA/V approx.
Mechanical characteristics of RS3080CL
Operating position: vertical, anode up or down
Weight: 18.5 kg (41 lbs) approx.
Dimensions: see outline drawing
Maximum ratings of RS3080CL
Frequency: 30 MHz
Anode voltage: 14 kV
Control grid voltage: -1.5 kV
Cathode current:
On load, CW: 2.3 A
Off load, CW: 2.6 A
Peak cathode current, CW: 85 A
Anode dissipation: 45 kW
Grid dissipation: 1.25 kW
Grid resistance (at blocked tube): 8 KΩ
Typical Operation of RS3080CL (Class C RF oscillator for industrial applications)
| Frequency | <30 MHz |
| Anode voltage | 12 kV |
| Control grid bias | -1055 V |
| RF Control grid voltage | 1555 V |
| Anode current | 12.7 A |
| Control grid current | 2.2 A |
| Anode input power | 151.9 kW |
| Anode output power | 106 kW |
| Anode dissipation | 35 kW |
| Control grid dissipation | 942 W |
| Grid resistance | 485 Ω |
| Feedback ratio | 14.8 % |
| Oscillator efficiency | 74.9 % |
Operations at higher frequencies available upon request
Cooling of RS3080CL
Anode cooling: forced air
Cooling water flow and pressure gradient: see cooling curves
Inlet air temperature: 25 °C typical
Temperature at any point on tube envelope: 220 °C max.
Cooling Curves RS 3080 CL
(For air flow from electrode terminal side)
Pa : anode dissipation Δp : pressure drop
q : air flow rate Tout : air outlet temperature
Constant Current Characteristics of RS 3080 CL
Outline Drawing (in mm) of RS 3080 CL
