Voltage - Triode (with diode, heptode or hexode) ·Diode-Diode-Triode
Double-diode triode combining radio detector and AVC rectification with subsequent voltage amplification. The paired diodes handle signal and control-voltage functions while the triode provides receiver audio or voltage gain.
A single-ended duodiode high-mu triode with conventional detector diodes and a high-mu triode amplifier section.
Loctal 8-contact
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
3 physical sections, each with unique specifications.
Section 1
Published promoted fields populated by semantic heading; identical repeated physical sections compressed.
Section 2
Published promoted fields populated by semantic heading; identical repeated physical sections compressed.
Section 3
No fixed ratings are recorded for this section.
Physical diode section added during approved section-structure reconciliation.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Plate Voltage
250 V
Plate Current
1.3 mA
Control Grid Voltage
-1 V
Cathode Bias Resistor
1000 ohm
Transconductance
1000 µS
Amplification Factor
100
Data set 02
Published operating points and test conditions from this source.
HeaterVoltageNominal
7 V
Nominal
HeaterCurrentNominal
160 mA
Nominal
Plate Voltage
250 V
ClassA
Data set 03
Published operating points and test conditions from this source.
Typical plate voltage
250 V
ClassA
Typical grid voltage
-1 V
ClassA
Typical plate current
1.3 mA
ClassA
Plate resistance
100000 Ohm
Section1
Transconductance
1000 uS
Section1
Amplification factor
100
Section1
Data set 04
Published operating points and test conditions from this source.
Minimum Diode Current
0.8 mA
EachDiode