NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

6LU8
High-Mu Triode - Beam Power Tube

EIA Base & Outline

EIA Base: 12DZEIA Bulb: 12-57
Source ........................................ GE DS 01/67

Application

Source ........................................ GE DS 01/67
Duodecar type used in combined vertical-deflection oscillator and amplifier in color tv receivers. Requires Duodecar 12-contact socket.

Mechanical Data

Source ........................................ GE DS 01/67
Bulb .......................................... T-12
Base Type ..................................... E12-74 Button 12-Pin
EIA Outline ................................... 12-57
EIA Base ...................................... 12DZ
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ GE DS 01/67
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.5 A
Maximum Heater-Cathode Voltage
Heater Positive with Respect to Cathode
DC Component ............................ 100 V
Total DC and Peak ....................... 200 V
Heater Negative with Respect to Cathode
Total DC and Peak ....................... 200 V

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ GE DS 01/67
Input ......................................... 16.0 pf
Output ........................................ 9.0 pf
Grid to Plate ................................. 0.5 pf

Triode
Source ........................................ GE DS 01/67
Input ......................................... 7.0 pf
Output ........................................ 2.0 pf
Grid to Plate ................................. 6.0 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ GE DS 01/67
Plate Voltage ................................. 400 V
Grid No. 2 Voltage ............................ 300 V
Plate Dissipation ............................. 14 W
Grid No. 2 Dissipation ........................ 2.75 W
Cathode Current ............................... 260 mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 1M Ω
Self Bias .................................. 2.2M Ω

Triode
Source ........................................ GE DS 01/67
Plate Voltage ................................. 400 V
Negative Grid No. 1 Voltage ................... -400 V
Plate Dissipation ............................. 2.5 W
Cathode Current ............................... 105 mA
Grid No. 1 Circuit Resistance
Self Bias .................................. 2.2M Ω

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ GE DS 01/67
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -4 V
Amplification Factor .......................... 58
Plate Resistance (approx) ..................... 16K Ω
Transconductance .............................. 3600 µMho
Plate Current ................................. 2.3 mA
Grid No. 2 Current (Maximum Signal) ........... -6.6 mA

Pentode Class A Amplifier
Source ........................................ GE DS 01/67
Plate Voltage ................................. 135 V
Grid No. 2 Voltage ............................ 120 V
Grid No. 1 Voltage ............................ -10 V
Plate Resistance (approx) ..................... 12K Ω
Transconductance .............................. 9300 µMho
Plate Current ................................. 56 mA
Grid No. 2 Current (Zero Signal) .............. 3.0 mA
Grid No. 2 Current (Maximum Signal) ........... -30 mA

Vert Defl Amplifier
Source ........................................ GE DS 01/67
DC Plate Supply Voltage ....................... 400 V
Peak Positive-Pulse Plate Voltage ............. 2500 V
DC Grid No. 2 Voltage ......................... 300 V
Peak Negative-Pulse Grid No. 1 Voltage ........ 250 V
Average Cathode Current ....................... 75 mA
Peak Cathode Current .......................... 260 mA
Plate Dissipation ............................. 14 W
Grid No. 2 Dissipation ........................ 2.75 W

A horizontal ribbon.

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A horizontal ribbon.

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Fri, 30 Sep 2022 08:32:22 -0700