Data set 01
192X Marconi Valve
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Anode voltage
200 V
Screen 200 V; grid bias -10 V
Anode current
40 mA
Anode 200 V; screen 200 V; grid bias -10 V
Power - Pentode Single (NOT beam) (under 10W) ·Pentode
DPT
High-efficiency indirectly heated Marconi output pentode designed to provide substantial output at approximately 200 V with comparatively small grid drive. Intended specifically as a receiver output valve.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B5
- Base pins
- 5
- Nominal heater
- 16 V / 250 mA
Description
High-efficiency indirectly heated pentode giving a large output at 200 volts with comparatively small grid input; intended as an output valve.
Socket description
European 5-pin base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B5
- Base pins
- 5
- Nominal heater voltage
- 16 V
- Nominal heater current
- 250 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
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 30000 Ω
- Transconductance
- 0.003 S
- Max plate voltage
- 200 V
- Max screen voltage
- 200 V
- Max plate dissipation
- 8 W
Published characteristics/ratings were promoted when unambiguous; remaining operating values are preserved in TUBE_SECTION_PARAMETER.
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 02
1955 Marconi
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Filament/heater voltage
16 V
Filament/heater current
250 mA
Maximum anode voltage
200 V
Maximum screen voltage
200 V
Maximum anode dissipation
8 W
Typical anode current
40 mA
Typical screen current
6 mA
Characteristic
Amplification factor
90
Plate resistance
30000 ohm
Transconductance
3000 uS