Data set 01
1936 Cossor Valve Manual
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Maximum anode current swing
50 mA
Published datasheet value
Power - Triode (over 1000V 100W) ·Triode
240B
Transmitting power triode intended for RF amplifier and oscillator service. Its manufacturer ratings and operating conditions identify it as a substantial radio-frequency power device suitable for transmitter applications.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B4
- Base pins
- -
- Nominal heater
- 20 V / 4 A
Description
The Western Electric 240B is a triode listed in the supplied catalog table. It is a water-cooled transmitting type intended for high-power RF service.
Socket description
European 4-pin base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B4
- Base pins
- -
- Nominal heater voltage
- 20 V
- Nominal heater current
- 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
Triode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.005 S
- Amplification factor
- 40
- Max plate voltage
- 12000 V
- Max plate dissipation
- 10000 W
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
Triode
Other
Filament/Heater Voltage
20 V
Published technical-data value
Filament/Heater Current
4 A
Published technical-data value
Data set 03
1956 Western Electric Tubes
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristics
Maximum/Typical Power Output
5000 W
Catalog-table value
Other
Maximum Plate Voltage
12000 V
Catalog-table value
Maximum Plate Dissipation
10000 W
Catalog-table value