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RK872A

Raytheon directly heated mercury half-wave rectifier for high-voltage supplies. Its heavy filament and low arc voltage provide substantial industrial current.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 5 V / 7.5 A

Description

RK872A is a Raytheon half wave—mercury rectifier with published peak-inverse-voltage, peak-current, DC-output-current and tube-drop 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: 5 V
Nominal heater current: 7.5 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

Rectifier peak inverse voltage: 10000 V
Rectifier nominal output current: 1.25 A
Rectifier peak forward current: 5 A
Rectifier forward voltage drop: 10 V

Published rectifier maximum peak inverse voltage, peak plate current, DC output current and average tube drop reviewed.

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

195X Raytheon Special Purpose Tubes

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

Filament/heater voltage
5 V
HalfWave MercuryVapor
Filament/heater current
7.5 A
HalfWave MercuryVapor
Average tube voltage drop
10 V
HalfWave MercuryVapor

Other

Peak inverse voltage
10000 V
HalfWave MercuryVapor
Peak plate current per plate
5000 mA
HalfWave MercuryVapor
DC output current
125 mA
HalfWave MercuryVapor