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A horizontal ribbon.

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A horizontal ribbon.

6FY7
Dual Tride

EIA Base & Outline

EIA Base: 12EOEIA Bulb: 9-60
Source ........................................ GE DS 04/64

Application

Source ........................................ GE DS 04/64
Duodecar type used as combined vertical-deflection oscillator and vertical-deflection amplifier in color and black-and-white television receivers.

Source ........................................ GE DS 04/64
Triode unit 1 is used as an oscillator, and triode unit 2 is used as an amplifier. Requires duodecar 12-contact socket.

Mechanical Data

Source ........................................ GE DS 04/64
Bulb .......................................... T-9
Base Type ..................................... E12-70 Button 12-Pin
EIA Outline ................................... 9-60
EIA Base ...................................... 12EO
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ GE DS 04/64
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.05 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
DC Component ............................ 200 V
Total DC and Peak ....................... 200 V

Direct Interelectrode Capacitances (approx)

Triode 1
Source ........................................ GE DS 04/64
Input ......................................... 2.2 pf
Output ........................................ 0.4 pf
Grid to Plate ................................. 4.4 pf

Triode 2
Source ........................................ GE DS 04/64
Input ......................................... 6.5 pf
Output ........................................ 1.2 pf
Grid to Plate ................................. 9.5 pf

Maximum Ratings (Design Center Values)

Triode 1
Source ........................................ GE DS 04/64
Plate Voltage ................................. 350 V
Negative Grid No. 1 Voltage ................... -400 V
Plate Dissipation ............................. 1 W
Plate Current ................................. 20 mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 2.2M Ω
Self Bias .................................. 2.2M Ω

Triode 2
Source ........................................ GE DS 04/64
Plate Voltage ................................. 275 V
Negative Grid No. 1 Voltage ................... -250 V
Plate Dissipation ............................. 7 W
Plate Current ................................. 50 mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 2.2M Ω
Self Bias .................................. 2.2M Ω

Characteristics and Typical Operation

Triode 1 Vertical Oscillator
Source ........................................ GE DS 04/64
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -3 V
Amplification Factor .......................... 65
Plate Resistance (approx) ..................... 40.5K Ω
Transconductance .............................. 1600 µMho
Plate Current ................................. 1.4 mA
Grid No. 1 Voltage for Ib ..................... 30 µa @ -5.5 V

Triode 2 Vertical Amplifier
Source ........................................ GE DS 04/64
Plate Voltage ................................. 150 V
Grid No. 1 Voltage ............................ -17.5 V
Amplification Factor .......................... 6
Plate Resistance (approx) ..................... 920 Ω
Transconductance .............................. 6500 µMho
Plate Current ................................. 35 mA
Grid No. 1 Voltage for Ib ..................... 50 µa @ -36 V

A horizontal ribbon.

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A horizontal ribbon.

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Sat, 25 Jun 2022 10:45:58 -0700