TUBE: 6K6GT
FICHIER SOURCE: sheets/093/6/6K6GT.pdf
FABRICANT: General Electric (GE Electronic Tube)
ANNÉE: 1953 (ET-T306B, 6-53)
LANGUE: en

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[Logo GE Electronic Tube] 6K6-GT — Description and Rating — PENTODE
The 6K6-GT is a power-amplifier pentode designed for use in the audio-frequency power output stage of TV and radio receivers. It may also be used as a triode-connected vertical deflection amplifier. Electrically, the 6K6-GT is identical to the type 41.

GENERAL — Cathode: Coated Unipotential
  Heater Voltage (A-C or D-C)  6.3 Volts
  Heater Current  0.4 Ampere
  Envelope T-9 Glass
  Base B6-81 or B7-7, Intermediate Shell Octal / B6-84 or B7-59 Short Interm Shell Octal
  Mounting Any
Direct Interelectrode Capacitances (approx., no ext shield):
  Grid-Number 1 to Plate  0.5 µµf
  Input  5.5 µµf
  Output  6.0 µµf

BASING DIAGRAM: RTMA 7S (bottom view)
TERMINAL CONNECTIONS:
  Pin 1 = No Connection (omitted on B6-81/B6-84)
  Pin 2 = Heater
  Pin 3 = Plate
  Pin 4 = Grid Number 2 (Screen)
  Pin 5 = Grid Number 1
  Pin 7 = Heater
  Pin 8 = Cathode and Grid Number 3
[*** TYPOLOGIE: PENTODE VRAIE — pin 8 = cathode + grille n°3. ***]

MAXIMUM RATINGS (Design-Center; Class A1 Amplifier | Vertical Deflection Amplifier Triode Connection):
  DC Plate Voltage  315 | 315 V
  Peak Positive Pulse Plate Voltage  --- | 1200 V
  Screen Voltage  285 | --- V
  Peak Negative Grid-Number 1 Voltage  --- | 250 V
  Plate Dissipation  8.5 | 7.0 W
  Screen Dissipation  2.8 | --- W
  DC Cathode Current  --- | 25 mA
  Peak Cathode Current  --- | 75 mA
  Heater-Cathode Voltage: pos DC 100|100, total DC+peak 200|200 ; neg total DC+peak 200|200 V
  Grid-No.1 Circuit Resistance: fixed bias 0.1|--- MΩ ; cathode bias 0.5|2.2 MΩ
Physical dimensions: T9, 3-5/16 / 2-3/4 / 1-9/32 (RTMA 9-11 or 9-41).
GENERAL ELECTRIC. Supersedes ET-T306A dated 3-50.

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CHARACTERISTICS AND TYPICAL OPERATION — CLASS A1 AMPLIFIER:
  Plate Voltage  100 | 250 | 315 V
  Screen Voltage  100 | 250 | 250 V
  Grid-Number 1 Voltage  -7 | -18 | -21 V
  Peak AF Grid-Number 1 Voltage  7 | 18 | 21 V
  Plate Resistance (approx.)  104000 | 90000 | 110000 Ω
  Transconductance  1500 | 2300 | 2100 µmho
  Zero-Signal Plate Current  9.0 | 32 | 25.5 mA
  Max-Signal Plate Current  9.5 | 33 | 28 mA
  Zero-Signal Screen Current  1.6 | 5.5 | 4.0 mA
  Max-Signal Screen Current  3.0 | 10 | 9.0 mA
  Load Resistance  12000 | 7600 | 9000 Ω
  Total Harmonic Distortion  11 | 11 | 15 %
  Max-Signal Power Output  0.35 | 3.4 | 4.5 W
PUSH-PULL CLASS A1 AMPLIFIER (two tubes), Fixed Bias | Cathode Bias:
  Plate Voltage  285 | 285 V ; Screen Voltage  285 | 285 V ; Grid-No.1 Voltage  -25.5 | - V ; Cathode-Bias Resistor  - | 400 Ω
  Peak AF Grid-to-Grid Voltage  51 | 51 V ; Zero-Signal Plate Current  55 | 55 mA ; Max-Signal Plate Current  72 | 61 mA
  Zero-Signal Screen Current  9.0 | 9.0 mA ; Max-Signal Screen Current  17 | 13 mA
  Effective Load Resistance Plate-to-Plate  12000 | 12000 Ω ; THD  6 | 4 % ; Max-Signal Power Output  10.5 | 9.8 W
AVERAGE CHARACTERISTICS, TRIODE CONNECTION (screen tied to plate):
  Plate Voltage  250 V ; Grid-No.1 Voltage  -18 V ; Amplification Factor  6.8 ; Plate Resistance  2500 Ω ; Transconductance  2700 µmho ; Plate Current  37.5 mA ; Grid-No.1 V for Ib=0.5mA  -48 V

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[courbes seules — pas de données tabulaires]
Average plate characteristics (Ef=6.3V, Ec2=250V); transfer char. (Eb=300V); plate char. pentode & triode connection; operation char. (Eb=Ec2=250V, Ec1=-18V, Esig=12.7Vrms). GENERAL ELECTRIC Schenectady. ET-T306B 6-53.