Data set 01
1959 Telefunken
Published operating points and test conditions from this source.
SECTION 1
Pentode
Application
Application
Battery AF output
Power - Pentode (NOT beam) ·Pentode
RES212
Telefunken battery output pentode designed to provide useful audio power from comparatively low anode voltage.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 2 V / 150 mA
Description
Battery output pentode capable of useful AF output at relatively low anode voltage.
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
- 2 V
- Nominal heater current
- 150 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
1 physical section, each with unique specifications.
Section 1
Pentode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 150 V
Published historical Telefunken data promoted where legible; filename-designated tube kept distinct from surrounding handbook entries.
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.