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Voltage - Triode (single) ·Triode

XXL

General-purpose triode amplifier.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B8G
Base pins: 6
Nominal heater: 6.3 V / 300 mA

Description

Triode amplifier with a unipotential cathode; the sheet publishes two Class A1 operating points and direct interelectrode capacitances.

Socket description

Loctal 8-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B8G
Base pins: 6
Nominal heater voltage: 6.3 V
Nominal heater current: 300 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

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 7000 Ω
Transconductance: 0.0036 S
Amplification factor: 24

Promoted from the first published Class A1 operating point: plate 100 V, grid 0 V, plate current 10 mA.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater Voltage
6.3 V
ClassA1
Heater Current
300 mA
ClassA1
Plate Voltage
100 V
ClassA1;OperatingPoint1
Control Grid Voltage
0 V
ClassA1;OperatingPoint1
Plate Voltage
250 V
ClassA1;OperatingPoint2
Control Grid Voltage
-8 V
ClassA1;OperatingPoint2

Characteristic

Plate Current
10 mA
ClassA1;OperatingPoint1
Plate Resistance
7000 ohm
ClassA1;OperatingPoint1
Transconductance
3600 uS
ClassA1;OperatingPoint1
Amplification Factor
24
ClassA1;OperatingPoint1
Plate Current
8 mA
ClassA1;OperatingPoint2
Plate Resistance
8700 ohm
ClassA1;OperatingPoint2
Transconductance
2300 uS
ClassA1;OperatingPoint2
Amplification Factor
20
ClassA1;OperatingPoint2

Capacitance

ControlGridToCathodeCapacitance
3.4 pF
Plate To Cathode Capacitance
2.6 pF
Grid To Plate Capacitance
2 pF