Voltage Triode Pentode ·Pentode-Triode
XCL84
Triode-pentode with separate cathodes for keyed AGC, sync separation, video-output, and related television circuits.
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 8 V / 300 mA
Description
Triode-pentode with separate cathodes for keyed AGC, sync separation, video-output and related television circuits.
Socket description
Small-button Noval 9-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 8 V
- Nominal heater current
- 300 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
Triode
- Max plate voltage
- 250 V
Published ratings and characteristics promoted from the approved source.
Section 2
Pentode
- Max plate voltage
- 250 V
- Max screen voltage
- 250 V
- Max plate dissipation
- 4 W
Published ratings and characteristics promoted from the approved source.
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.