Voltage - Dual Triode (similar) ·Triode-Triode
XCC82
General-purpose indirectly heated twin triode intended for ordinary amplifier and signal-processing service, with two triode sections in a compact receiving-tube envelope.
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 7 V / 300 mA
Description
General-purpose twin triode with indirectly heated cathodes.
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
- 7 V
- Nominal heater current
- 300 mA
- Parallel heater voltage
- 3.5 V
- Parallel heater current
- 600 mA
- 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
2 physical sections, each with unique specifications.
Section 1
Triode
- Plate resistance
- 7700 Ω
- Transconductance
- 0.0022 S
- Amplification factor
- 17
- Max plate voltage
- 300 V
- Max plate dissipation
- 2.75 W
- Max cathode current
- 20 mA
Miniwatt XCC82/1AU7 general-purpose indirect-heater double triode. At typical 250 V plate operating point: transconductance 2.2 mA/V, amplification factor 17 and plate resistance 7.7 kΩ. Other operating conditions yield different values. Each physical triode: maximum anode voltage 300 V, plate dissipation 2.75 W and cathode current 20 mA. Heater configurations given as 7 V at 0.3 A in series or 3.5 V at 0.6 A parallel; heater warmup approximately 11 seconds.
Section 2
Triode
- Plate resistance
- 7700 Ω
- Transconductance
- 0.0022 S
- Amplification factor
- 17
- Max plate voltage
- 300 V
- Max plate dissipation
- 2.75 W
- Max cathode current
- 20 mA
Miniwatt XCC82/1AU7 second physical receiving triode, same construction and electrical ratings as first. At the published 250 V typical plate operating point gm 2.2 mA/V, mu 17, plate resistance 7.7 kΩ; values depend on bias and current. Maximum anode voltage 300 V, plate dissipation 2.75 W and cathode current 20 mA. Alternative heater connections: 7 V 0.3 A series or 3.5 V 0.6 A parallel.
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.