NJ7P SQL Tube Database Query

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6816
Power Tetrode

EIA Base & Outline

EIA Base: F77

Substitute Data

Substitutes ................................... 6884

Mechanical Data

EIA Base ...................................... F77

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 2.1 A

Direct Interelectrode Capacitances (approx)

Tetrode
Input ......................................... 14 pf
Output ........................................ 0.015 pf
Grid to Plate ................................. 0.085 pf

Maximum Ratings (Design Center Values)

Tetrode
Plate Voltage ................................. 1000 V
Grid No. 2 Voltage ............................ 300 V
Plate Dissipation ............................. 115 W
Grid No. 2 Dissipation ........................ 4.5 W

Characteristics and Typical Operation

Class C Oscillator/Amplifier
Plate Voltage ................................. 900 V
Grid No. 2 Voltage ............................ 300 V
Grid No. 1 Voltage ............................ -30 V
Grid No. 1 Current ............................ 10 mA
Plate Current ................................. 170 mA
Grid No. 2 Current ............................ 1 mA
Driving Power ................................. 3 W
Power Output (approx) ......................... 80 W

Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 700 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -50 V
Grid No. 1 Current ............................ 10 mA
Plate Current ................................. 130 mA
Grid No. 2 Current ............................ 10 mA
Driving Power ................................. 3 W
Power Output (approx) ......................... 45 W

Push Pull Class AB1 Amplifier
Plate Voltage ................................. 850 V
Grid No. 2 Voltage ............................ 300 V
Grid No. 1 Voltage ............................ -15 V
Peak Grid No. 1 Voltage........................ 30 V
Plate Current (Zero Signal) ................... 80 mA
Plate Current (Maximum Signal) ................ 200 mA
Grid No. 2 Current (Zero Signal) .............. 0 mA
Grid No. 2 Current (Maximum Signal) ........... 20 mA
Driving Power ................................. 0 W
Load Resistance ............................... 7K Ω
Power Output (approx) ......................... 80 W

Push Pull Class AB2 Amplifier
Plate Voltage ................................. 850 V
Grid No. 2 Voltage ............................ 300 V
Grid No. 1 Voltage ............................ -15 V
Peak Grid No. 1 Voltage........................ 46 V
Plate Current (Zero Signal) ................... 80 mA
Plate Current (Maximum Signal) ................ 335 mA
Grid No. 2 Current (Zero Signal) .............. 0 mA
Grid No. 2 Current (Maximum Signal) ........... 25 mA
Driving Power ................................. 0.3 W
Load Resistance ............................... 3.96K Ω
Power Output (approx) ......................... 140 W

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Mon, 28 Nov 2022 01:33:04 -0700