NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

806
Power Triode

EIA Base & Outline

EIA Base: 2N

Substitute Data

Substitutes ................................... 8000

Application

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

Mechanical Data

EIA Base ...................................... 2N

Electrical Data

Heater Voltage ................................ 5 V
Heater Current ................................ 10 A

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 6.1 pf
Output ........................................ 1.1 pf
Grid to Plate ................................. 4.2 pf

Maximum Ratings (Design Center Values)

Triode
Plate Voltage ................................. 3300 V
Plate Dissipation ............................. 225 W

Characteristics and Typical Operation

Class C Amplifier
Plate Voltage ................................. 3300 V
Grid No. 1 Voltage ............................ -600 V
Grid No. 1 Current ............................ 40 mA
Plate Current ................................. 300 mA
Driving Power ................................. 34 W
Power Output (approx) ......................... 780 W

Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 3000 V
Grid No. 1 Voltage ............................ -670 V
Grid No. 1 Current ............................ 27 mA
Plate Current ................................. 195 mA
Driving Power ................................. 24 W
Power Output (approx) ......................... 460 W

Push Pull Class B Amplifier
Plate Voltage ................................. 3300 V
Grid No. 1 Voltage ............................ -240 V
Peak Grid No. 1 Voltage........................ 930 V
Plate Current (Zero Signal) ................... 80 mA
Plate Current (Maximum Signal) ................ 475 mA
Driving Power ................................. 35 W
Load Resistance ............................... 16K Ω
Power Output (approx) ......................... 1120 W

A horizontal ribbon.

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A horizontal ribbon.

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Thu, 11 Aug 2022 14:37:55 -0700