Data set 01
1951 Mullard Valve and Service Manual
Published operating points and test conditions from this source.
SECTION 1
Pentode
Application
Service
Line time-base output
Power - TV Horizontal Output (sweep) ·Pentode
EL38M
EL38 variant intended for television line time-base power stages, combining approximately 25 W plate dissipation with substantial horizontal-deflection output capability.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- IO
- Base pins
- 8
- Nominal heater
- 6.3 V / 1.4 A
Description
Output pentode variant intended for line time-base output service.
Socket description
International Octal
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- IO
- Base pins
- 8
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 1.4 A
- 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
- Transconductance
- 0.014 S
- Max plate voltage
- 400 V
- Max screen voltage
- 400 V
- Max plate dissipation
- 25 W
- Max screen dissipation
- 6 W
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.