NJ7P SQL Tube Database Query

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850
Power Tetrode

EIA Base & Outline

EIA Base: T3B

Mechanical Data

EIA Base ...................................... T3B

Electrical Data

Heater Voltage ................................ 10 V
Heater Current ................................ 3.25 A

Direct Interelectrode Capacitances (approx)

Tetrode
Input ......................................... 17 pf
Output ........................................ 25 pf
Grid to Plate ................................. 0.25 pf

Maximum Ratings (Design Center Values)

Tetrode
Plate Voltage ................................. 1250 V
Grid No. 2 Voltage ............................ 175 V
Plate Dissipation ............................. 100 W
Grid No. 2 Dissipation ........................ 10 W

Characteristics and Typical Operation

Class C Amplifier
Plate Voltage ................................. 1250 V
Grid No. 2 Voltage ............................ 175 V
Grid No. 1 Voltage ............................ -150 V
Grid No. 1 Current ............................ 35 mA
Plate Current ................................. 160 mA
Driving Power ................................. 10 W
Power Output (approx) ......................... 130 W

Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 1000 V
Grid No. 2 Voltage ............................ 140 V
Grid No. 1 Voltage ............................ -100 V
Grid No. 1 Current ............................ 40 mA
Plate Current ................................. 125 mA
Driving Power ................................. 10 W
Power Output (approx) ......................... 65 W

Class C Modulated Amplifier (Grid)
Plate Voltage ................................. 1250 V
Grid No. 2 Voltage ............................ 175 V
Grid No. 1 Voltage ............................ -13 V
Plate Current ................................. 110 mA
Power Output (approx) ......................... 40 W

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This database contains data on thousands of tubes. Every effort has been made to insure the accuracy of this reference, however, I assume no liability for the results of using information contained herein.

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(c) 1994-2021 by William A. Beech, NJ7P

Thu, 18 Aug 2022 09:56:44 -0700