Data set 01
1968 General Electric Co
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
Maximum Output Voltage
60 V
Maximum Average Output Current
6 A
Maximum Peak Output Current
26 A
Rectifier - Half Wave ·Rectifier
4B28
Directly heated gas-filled high-current rectifier for industrial power supplies. Rated for approximately 300 V peak inverse voltage, 6 A DC output, and 26 A peak current from a heavy filament.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 2.2 V / 17 A
Description
The 4B28 is a gas-filled rectifier with published output-current, output-voltage, and peak-inverse-voltage ratings.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater voltage
- 2.2 V
- Nominal heater current
- 17 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
- Rectifier peak inverse voltage
- 300 V
- Rectifier nominal output current
- 6 A
- Rectifier peak forward current
- 26 A
Rectifier promoted fields mapped from the printed maximum ratings; representative row used for repeated identical anode sections where applicable.
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.