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T21

Beam-power tube intended for sweep or time-base output service, with approximately 21 W plate dissipation and high peak current for pulsed deflection circuitry.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: 5
Nominal heater: 4 V / 1.2 A

Description

Heater-cathode beam power amplifier tube, similar electrically to the 6L6G, for oscillator, amplifier, and frequency-multiplier service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 5
Nominal heater voltage: 4 V
Nominal heater current: 1.2 A
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

Beam Power

X-ray radiationInterelectrode capacitances

Max plate dissipation: 21 W

Thyratron section; peak anode current 300 mA and published scanning/rectifier ratings preserved 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

1960 Mazda

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Peak anode current
300 mA
Maximum sweep output
120 Vpp
Peak voltage between electrodes
170 V
Maximum time-base frequency
15 kHz

Characteristic

Gas voltage drop
20 V