NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

800
Power Triode

EIA Base & Outline

Substitute Data

Substitutes ................................... 812

Application

Thoriated-tungsten-filament type used as af power amplifier and modulator and as rf power amplifier and oscillator. Requires small four-contact socket and may be operated in vertical position only, base up or down.

Mechanical Data

Electrical Data

Heater Voltage ................................ 7.5 V
Heater Current ................................ 3.1 A

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 2.8 pf
Output ........................................ 2.8 pf
Grid to Plate ................................. 2.5 pf

Maximum Ratings (Design Center Values)

Triode
Plate Dissipation ............................. 35 W

Characteristics and Typical Operation

Class C Oscillator/Amplifier
Plate Voltage ................................. 1250 V
Grid No. 1 Voltage ............................ -400 V
Grid No. 1 Current ............................ 25 mA
Plate Current ................................. 80 mA
Power Output (approx) ......................... 100 W

A horizontal ribbon.

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A horizontal ribbon.

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Tue, 16 Aug 2022 00:15:38 -0700