Data set 01
1947 Westinghouse
Published operating points and test conditions from this source.
SECTION 1
Triode
Application
Application
AudioModulator_RFPower_Oscillator text
Other
Maximum Frequency Full Ratings
30 MHz
Power - Triode (over 1000V 100W) ·Triode
5705
Water-cooled high-power triode for Class B audio modulation and Class C RF amplification or oscillation. Rated around 11 kV and 10 kW plate dissipation, it serves multi-kilowatt transmitter systems through roughly 30 MHz.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 22 V / 60 A
Description
Water-cooled high-power triode for Class B audio modulation and Class C RF power amplification/oscillation.
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
- 22 V
- Nominal heater current
- 60 A
- 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
Triode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 11000 V
- Max plate dissipation
- 10000 W
- Max cathode current
- 1 A
Published ratings promoted from the approved Westinghouse/RMA 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.