NJ7P SQL Tube Database Query

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82
Mercury-Vapor Full-Wave Rectifier

EIA Base & Outline

Application

Source ........................................ RCA R-10 - 1932
The 82 is a full-wave mercury-vapor rectifier tube of the hot-cathode type for use in suitable rectifying devices designed to supply d-c power of uniform voltage to receivers in which the direct current requirement are subject to considerable variation. The excellent voltage regulation characteristic of the 82 is due to its low and practically constant voltage drop (only about 15 volts) for any current drain up to the full emission of the filament. The 82 is not interchangeable with any other rectifier type.

Mechanical Data

Bulb .......................................... ST-14
Base Type ..................................... Medium 4-Pin Bayonet
EIA Outline ................................... 14-1
EIA Base ...................................... 4C

Electrical Data

Filament Voltage .............................. 2.5 V
Filament Current .............................. 3 A

Maximum Ratings (Design Center Values)

Rectifier
Peak Inverse Plate Voltage .................... 1400 V
AC Plate Supply Voltage Each Plate ............ 500 V
Transient Peak Plate Current Each Plate ....... 400 mA
Steady State DC Output Current Each Plate ..... 125 mA
Voltage Drop @ Current ........................ 15 V @ 125 mA

Characteristics and Typical Operation

Rectifier
Output Voltage ................................ 900 V
Output Current ................................ 115 mA

If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.

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Fri, 09 Dec 2022 05:15:15 -0700