1Q6

Very-low-power battery diode-pentode combining signal detection with voltage amplification. The diode recovers the received signal while the pentode provides subsequent gain from an exceptionally economical directly heated filament.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 8CO
Socket code: -
Base pins: 8
Nominal heater: 1.25 V / 40 mA

Description

Combined detector diode and pentode amplifier for low-voltage battery receivers. Electrical ratings and representative operating data were extracted from the approved manual page.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 8CO
Socket code: -
Base pins: 8
Nominal heater voltage: 1.25 V
Nominal heater current: 40 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

8CO - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Detector diode section.

Section 2

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 400000 Ω
Transconductance: 0.0006 S
Max plate voltage: 100 V
Max screen voltage: 100 V
Max cathode current: 2 mA

Combined detector diode and pentode amplifier for low-voltage battery receivers.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 2

Pentode

Other

Plate Voltage
30 V
Plate Voltage
67.5 V
Screen Voltage
30 V
Screen Voltage
67.5 V
Plate Current
0.33 mA
30 V
Plate Current
1.6 mA
67.5 V

Data set 02

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 2

Pentode

Characteristics

Input capacitance
1.8 pF
Output capacitance
4.2 pF
Grid-to-plate capacitance
0.085 pF

Other

Plate voltage
67.5 V
ClassA; OperatingPoint1
Screen voltage
67.5 V
ClassA; OperatingPoint1
Control-grid bias
0 V
ClassA; OperatingPoint1
Plate current
1.6 mA
ClassA; OperatingPoint1
Screen current
0.4 mA
ClassA; OperatingPoint1
Plate voltage
30 V
ClassA; OperatingPoint2
Screen voltage
30 V
ClassA; OperatingPoint2
Control-grid bias
0 V
ClassA; OperatingPoint2
Plate current
0.33 mA
ClassA; OperatingPoint2
Screen current
0.09 mA
ClassA; OperatingPoint2