Data set 01
1999 Philips 0-D
Published operating points and test conditions from this source.
SECTION 1
Octode
Characteristic
Conversion transconductance
500 µS
FrequencyConverter
Plate resistance
1.5 MΩ
FrequencyConverter
Voltage Radio Detector Converter ·Octode
DK22
Directly heated octode frequency changer for battery superheterodyne receivers. It combines local-oscillator and mixer action in one multi-grid valve, providing useful conversion gain from comparatively low receiver supply voltages.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 1.2 V / 50 mA
Description
DK22 is a directly heated octode frequency converter for superheterodyne receivers. The supplied Philips datasheet was read for construction, heater/filament data, ratings, characteristics, operating conditions, capacitances, and deflection information where applicable.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater voltage
- 1.2 V
- Nominal heater current
- 50 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- Yes
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
Octode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 135 V
- Max screen voltage
- 30 V
Directly heated octode frequency converter for superheterodyne receivers
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.