Data set 01
1945 United Electronics
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
Filament voltage
5 V
Nominal general rating
Filament current
6.75 A
Nominal general rating
Rectifier - Half Wave ·Rectifier
975A
Directly heated half-wave rectifier for transmitter, industrial, and other substantial power supplies. Its heavy five-volt filament supports conventional single-anode AC-to-DC conversion.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- JUMBO4B
- Base pins
- -
- Nominal heater
- 5 V / 6.75 A
Description
975A is a rectifier described in the approved United Electronics engineering datasheet.
Socket description
Super Jumbo 4-pin bayonet
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- JUMBO4B
- Base pins
- -
- Nominal heater voltage
- 5 V
- Nominal heater current
- 6.75 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
Rectifier
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Published ratings and characteristics promoted where directly established; remaining useful published data retained as parameters.
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.