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WE14

High-transconductance beam-power audio-output tube delivering approximately 8 W single-ended output, with 18 W plate dissipation and strong sensitivity from modest grid drive.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 1.2 A

Description

The WE14 is an indirectly heated low-frequency beam output pentode with 18 W maximum plate dissipation. The Italian source describes roughly 8 W output from a 4.5 V RMS grid drive and highlights its high transconductance.

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: 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

Plate resistance: 30000 Ω
Transconductance: 0.015 S
Max plate voltage: 250 V
Max screen voltage: 275 V
Max plate dissipation: 18 W
Max screen dissipation: 2.5 W
Max cathode current: 90 mA

Beam output pentode; screen dissipation may reach 5 W with signal.

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

1959 Telefunken

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Plate voltage
250 V
Screen voltage
250 V
Grid bias
-7 V
Plate current
72 mA
Screen current
8 mA
Grid signal
4.5 V rms
Output power
8 W
Load resistance
3500 Ohm
Maximum screen dissipation with signal
5 W

Capacitance

Grid-plate capacitance
<0.7 pF