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Power - Pentode (NOT beam) ·Pentode-Pentode-Triode

ECLL800

Combination tube integrating a phase-inverter triode with two power pentodes for push-pull audio power amplification, delivering approximately 9.2 watts in published operation.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
3
Base
-
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 600 mA

Description

Double power pentode with phase-inverter triode for push-pull power amplification.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
600 mA
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

3 physical sections, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Max plate voltage
250 V
Max screen voltage
250 V

Section 2

Triode

X-ray radiationInterelectrode capacitances
Max plate voltage
300 V
Max plate dissipation
0.5 W

Section 3

Pentode

X-ray radiationInterelectrode capacitances
Max plate voltage
250 V
Max screen voltage
250 V

Second physical output pentode section; added to align rows with SectionCount.

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

1955 Lorenz

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Push-pull output power

    9.2 W

    PushPull