Data set 01
1936 Cossor Valve Manual
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristics
Control characteristic
Variable-mu
Intended service
High-frequency amplifier
Voltage Pentode - Remote Cutoff (single) ·Pentode
MSPEN
Early Cossor general-purpose pentode for receiver and conventional small-signal amplifier service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B7
- Base pins
- 7
- Nominal heater
- -
Description
MSPEN: Cossor pentode valve. The complete Cossor sheet was read for construction, technical data, operating recommendations, and application notes.
Socket description
Medium 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B7
- Base pins
- 7
- Nominal heater voltage
- -
- Nominal heater current
- -
- 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
No fixed ratings are recorded for this section.
Published ratings/characteristics promoted from the approved datasheet.
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
193X Cossor
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristics
Mutual Conductance
200000 µS
Published technical-data value