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DA1212000

Philips water-cooled directly heated high-vacuum rectifier for very-high-power DC supplies. Its heavy filament construction supports approximately 6–12 kV RMS anode service and 1 A mean rectified current.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 22 V / 38.5 A

Description

Philips DA1212000 is a directly heated high-vacuum rectifier with a 22 V, 38.5 A filament. Published service covers 6000–12000 V RMS anode voltage and 1000 mA mean rectified current, with 12000 W allowable anode dissipation. Water-cooled anode construction permits very high dissipation.

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: 22 V
Nominal heater current: 38.5 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

Plate resistance: 300 Ω
Max plate dissipation: 12000 W
Rectifier nominal output current: 1 A

Published ratings and characteristics promoted where a locked-schema field is semantically applicable; additional values 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.

Data set 01

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

Saturation current
5000 mA
Published datasheet value
Saturation voltage
1500 V
Published datasheet value
Internal resistance
300 Ω
Published datasheet value
Cooling method
water circulation
Published datasheet value

Other

Anode dissipation
- to 12000 W
Published datasheet value
Anode dissipation test value
15000 W
Published test value
RMS anode A.C. voltage range
6000 to 12000 V
Published datasheet value
D.C. output voltage range
6000 to 12000 V
Published datasheet value
Mean rectified D.C. current
- to 1000 mA
Published datasheet value
Useful D.C. output power
12000 W
Published datasheet value