EM778

Traveling-wave microwave amplifier for broadband RF power or intermediate amplification, using electron-beam interaction with a slow-wave structure.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / -

Description

The EIMAC EM778 is a ruggedized ceramic/metal periodic-permanent-magnet-focused traveling-wave power-amplifier tube for 5–11 ghz service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: 6.3 V
Nominal heater current: -
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

TravelingWave

X-ray radiationInterelectrode capacitances

Max cathode current: 23 mA

Traveling-wave electron-beam device. Fixed section schema has no helix/collector/beam-voltage promoted fields; published values retained as parameters.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1962 Eimac

Published operating points and test conditions from this source.

SECTION 1

TravelingWave

Other

Cathode current
23 mA
Minimum CW output power
1 W
Nominal small-signal gain
60 dB

Characteristic

Frequency range minimum
5 GHz
Frequency range maximum
11 GHz