Data set 01
1936 Cossor Valve Manual
Published operating points and test conditions from this source.
SECTION 3
Triode
Characteristics
Heater/filament voltage
16 V
Heater/filament current
250 mA
Voltage - Triode (with diode, heptode or hexode) ·Diode-Diode-Triode
DDT16
Cossor double-diode high-mu triode combining receiver detection with substantial voltage amplification. Two diode elements provide signal and control-voltage rectification while the high-gain triode amplifies the recovered signal.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 3
- Base
- -
- Socket code
- B7
- Base pins
- 7
- Nominal heater
- 16 V / 250 mA
Description
DDT16: Cossor combined double-diode triode. 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
- 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
3 physical sections, each with unique specifications.
Section 1
Diode
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Published ratings/characteristics promoted from the approved datasheet.
Section 2
Diode
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Published ratings/characteristics promoted from the approved datasheet.
Section 3
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 100000 Ω
- Transconductance
- 0.001 S
- Amplification factor
- 100
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
Diode
Characteristics
Mutual Conductance
100000 µS
Published technical-data value
Amplification Factor
100
Published technical-data value