Voltage Tetrode ·Pentode-Tetrode
EEL71
Combined tetrode and output-pentode tube for detector, AF preamplifier, and audio-output service. Its power pentode section gives the tube a clear output-stage function.
- Sections
- 2
- Base
- -
- Socket code
- B8G
- Base pins
- 8
- Nominal heater
- 6.3 V / 750 mA
Description
Tetrode-output-pentode combination for detector, AF preamplifier and AF output service.
Socket description
Loctal 8-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B8G
- Base pins
- 8
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 750 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
2 physical sections, each with unique specifications.
Section 1
Tetrode
No fixed ratings are recorded for this section.
Section 2
Pentode
- Transconductance
- 0.0065 S
- Max plate voltage
- 250 V
- Max screen voltage
- 250 V
- Max cathode current
- 70 mA
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.