Research and Special Purpose

Photonis continues to manufacture a wide range of special purpose power tubes for research applications. Our tetrodes, triodes and cavities are integral parts of linear accelerator power sources in laboratories throughout the world. 

FM broadcast service
High Efficiency-Low Pressure Radiator
Forced Air Cooled

Technical information

Type Number Power Peak (kW) Volts Amps G2 Volts Gain dB Pulsed Length (µsec) Duty factory (%)
7835 5000 32 260 - 12 500 1.5
4617 5000 30 300 - 13 25 1
94402E 175 23000 43 2200 20 10 1


We manufacture our power tubes for research and special applications to custom specifications to ensure your research is accurate and reliable.

Photonis pulsed RF amplifiers include a wide selection of tubes, matching cavities and integral cavity modular amplifiers for pulsed RF service at frequencies to 1400 MHz. They feature anode, grid and drive pulsed ratings, pulse lengths to 2200 µsec, duty cycles to 25% and peak power to 8 megawatts. Phase stability and broadband capability make these types ideal for applications ranging from linear-accelerator drives to fire-control radar.

Photonis Series Regulators & Hard Tube Modulators feature sturdy, fault-resistant cathodes and clean, high voltage designs which make these types ideal for modulation and control of pulsed RF amplifiers, klystrons, TWTs and more in modern shaped-pulse and pulse width controlled systems. Pulse currents to 90 amperes and hold-off voltages to 200 kV.

Distributed Amplifiers from Photonis are sturdy, high gain, ceramic/metal tetrodes with dual input configuration specifically designed for distributed amplifier service to 500 MHz.

Photonis Accelerator Sources are high gain, ceramic/metal tetrodes with matching cavities for use as pulsed RF sources in accelerator service.

Research and Special Purpose



Power Tube 4616(PDF file, 365.73 KB)
Power Tube 4617(PDF file, 599.9 KB)
Power Tube 7835 (PDF file, 289.56 KB)
Power Tube 94402E(PDF file, 277.05 KB)

Related Applications

Linear Accelerator
RF Frequency Generation

Resource center

Are you looking for a specification sheet or paper? Documents like these and more are available in the Photonis Resource Center. 

Visit the Resource Center

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