GI-31
Compact pulse generator triode
Description
Purpose and operating mode
The GI-31 is a compact pulse generator triode for producing high-frequency oscillations in decimetre- and centimetre-wave equipment. With pulse anode modulation it delivers at least 1.5 kW of RF pulse output at frequencies up to 2100 MHz.
Full descriptionCollapse description
Construction and cooling
The device uses a metal-ceramic body and an indirectly heated oxide cathode. Its 6.3 V heater draws 0.95 ± 0.05 A. The compact package is no more than 35 mm high and 25.8 mm in diameter, with a maximum mass of 18 g.
Key operating data
In the reference pulse mode the anode pulse voltage is 2.5 kV, pulse current 2.1 A, pulse duration up to 3 µs and duty factor 500. The tube may operate in any physical position, but the electrode contacts and surrounding RF structure must follow the equipment design.
Selection and pre-installation checks
Selection requires the exact GI-31 marking and the specified metal-ceramic interface. Check the ceramic, contact faces and mounting surfaces before installation. The technical specification is ST3.323.039 TU.
General operating principles are described in the vacuum tube reference article. Other devices of this class are listed under generator and modulator tubes.
Technical details
- Designation
- GI-31
- Device type
- Pulse generator triode
- Operating range
- Decimetre- and centimetre-wave bands
- Maximum operating frequency
- 2100 MHz
- Construction
- Metal-ceramic
All specificationsCollapse specifications
- Cathode
- Indirectly heated oxide cathode
- Heater voltage
- 6.3 V
- Heater current
- 0.95 ± 0.05 A
- Minimum pulse output power
- 1.5 kW
- Reference pulse anode voltage
- 2.5 kV
- Reference pulse anode current
- 2.1 A
- Maximum pulse duration
- 3 µs
- Reference duty factor
- 500
- Dimensions
- Maximum 35 × 25.8 mm
- Maximum mass
- 18 g
- Operating position
- Any
- Minimum service life
- 1500 h
- Technical specification
- ST3.323.039 TU
Payment & delivery
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