Data set 01
1951 Mullard Valve and Service Manual
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
Peak Inverse Voltage
6500 V
Peak Anode Current
1250 mA
Rectifier - Half Wave ·Rectifier
RG1240A
Mercury-vapor high-voltage half-wave rectifier, normalized from RG1-240A. Its heavy filament and low arc voltage provide ampere-class industrial power conversion.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B4
- Base pins
- 4
- Nominal heater
- 4 V / 2.7 A
Description
Mercury-vapor high-voltage rectifier normalized from printed type RG1-240A, rated for 6.5 kV peak inverse voltage.
Socket description
European 4-pin base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B4
- Base pins
- 4
- Nominal heater voltage
- 4 V
- Nominal heater current
- 2.7 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
- Max cathode current
- 250 mA
- Rectifier peak inverse voltage
- 6500 V
- Rectifier nominal output current
- 1.25 A
- Rectifier peak forward current
- 1.25 A
- Rectifier forward voltage drop
- 12 V
Gas-discharge device.
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.
Data set 02
1962 Mullard Industrial Rectifiers
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Characteristic
Filling
Mercury vapour
Nominal Ignition Voltage
12 V
Other
Cathode Surge Current
25 A
FaultProtection;MaximumDuration0.1s
Maximum Operating Frequency
150 Hz
Condensed Mercury Temperature
25 to 65 C
Anode Supply Voltage per Valve RMS
2220 V
SinglePhaseFullWave
DC Output Voltage
2000 V
SinglePhaseFullWave;TwoValves
DC Output Current
500 mA
SinglePhaseFullWave;TwoValves
Data set 03
1971 Mullard Gas Filled Tubes
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
Maximum peak inverse anode voltage
6.5 kV
Maximum average cathode current
1.25 A
Maximum surge cathode current
1.25 A
Fault protection
Maximum operating frequency
150 Hz
Heater/filament voltage
4 V
Heater/filament current
2.7 A