Data set 01
1971 English Electric Valve
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
Surge anode current per anode
500 A
0.1s max
SECTION 2
Rectifier
Other
Surge anode current per anode
500 A
0.1s max
Rectifier - Full Wave ·Rectifier-Rectifier
BD12
Hot-cathode full-wave mercury-vapor rectifier for very-high-current industrial power conversion. Rated for approximately 1 kV peak inverse voltage and 16.5 A nominal rectified output, with a low conducting voltage drop.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 5 V / 35 A
Description
Hot-cathode full-wave mercury-vapour rectifier.
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
- 5 V
- Nominal heater current
- 35 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
2 physical sections, each with unique specifications.
Section 1
Rectifier
X-ray radiationInterelectrode capacitances
- Rectifier peak inverse voltage
- 1000 V
- Rectifier nominal output current
- 16.5 A
- Rectifier peak forward current
- 50 A
- Rectifier forward voltage drop
- 12 V
Section 2
Rectifier
X-ray radiationInterelectrode capacitances
- Rectifier peak inverse voltage
- 1000 V
- Rectifier nominal output current
- 16.5 A
- Rectifier peak forward current
- 50 A
- Rectifier forward voltage drop
- 12 V
Second physical rectifier section; promoted electrical properties populated from identical section.
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.