Data set 01
1951 Mullard Valve and Service Manual
Published operating points and test conditions from this source.
SECTION 1
Pentode
Application
Service
Audio power output
Triode-connected operation
Published
TriodeConnection
Power - Pentode Single (NOT beam) (under 10W) ·Pentode
EL32
Low-current-heater output pentode for AC/DC and automobile-radio audio stages.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- Octal
- Socket code
- IO
- Base pins
- 8
- Nominal heater
- 6.3 V / 200 mA
Description
Output pentode with 200 mA heater for AC/DC and car-radio audio output service. Published heater, characteristics, ratings and application information were read from the supplied Mullard sheet.
Socket description
International Octal
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- Octal
- Socket code
- IO
- Base pins
- 8
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 200 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Octal - 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
- 70000 Ω
- Transconductance
- 0.0028 S
- Max plate voltage
- 250 V
- Max screen voltage
- 250 V
- Max plate dissipation
- 8 W
- Max screen dissipation
- 1.6 W
- Max cathode current
- 42 mA
Published source values promoted where applicable; additional values retained as parameters.
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
1963 Mullard
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Anode current
32 mA
ClassA
Screen current
5 mA
ClassA
Load resistance
8000 ohm
ClassA
Output power
3.6 W
ClassA
Push-pull output power
7 W
PushPull; TwoTubes