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6FY7
Dual Tride

Base & Bulb ( GE DS 04/64)

Application

Duodecar type used as combined vertical-deflection oscillator and vertical-deflection amplifier in color and black-and-white television receivers.Triode unit 1 is used as an oscillator, and triode unit 2 is used as an amplifier. Requires duodecar 12-contact socket.

Mechanical Data

Bulb .......................................... T-9
Base .......................................... E12-70 Button 12-Pin
Outline ....................................... 9-60
EIA Base ...................................... 12EO
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

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
Input ......................................... 2.2 pf
Output ........................................ 0.4 pf
Grid to Plate ................................. 4.4 pf

Direct Interelectrode Capacitances (approx)

Triode 2
Input ......................................... 6.5 pf
Output ........................................ 1.2 pf
Grid to Plate ................................. 9.5 pf

Maximum Ratings (Design Center Values)

Triode 1
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

Maximum Ratings (Design Center Values)

Triode 2
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
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -3 V
Amplification Factor .......................... 65
Plate Resistance (approx) ..................... 40.5K Ω
Transconductance .............................. 1600 µ
Plate Current ................................. 1.4 mA
Grid No. 1 Voltage for Ib ..................... 30 µa @ -5.5 V

Characteristics and Typical Operation

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

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