TUBE: 807
FICHIER SOURCE: sheets/074/8/807.pdf
FABRICANT: Ferranti Limited (Gem Mill, Chadderton, Oldham, Lancs.)
ANNEE: 1957 (Issue 1, Aug. 1957)
LANGUE: en

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FERRANTI — 807 — OUTPUT BEAM TETRODE
Indirectly heated beam tetrode designed for use as a Low Frequency Amplifier or Modulator, or as a Radio Frequency Power Amplifier or Oscillator.

PHYSICAL DETAILS:
Base .... UX-5 pin bayonet
Max. Overall Length .... 147 mm
Max. Seated Height .... 130 mm
Max. Diameter (Bulb) .... 53 mm
Mounting Position .... Any
BASE CONNECTIONS:
  Pin 1 - Heater         Pin 4 - Cathode, Beam Plates
  Pin 2 - Screen Grid    Pin 5 - Heater
  Pin 3 - Control Grid   Top Cap - Anode

HEATER:
  Heater Voltage .... 6.3 volts
  Heater Current .... 0.9 amp

RATINGS (Absolute Maximum):
  Max. Anode Voltage ............ 600 volts
  Max. Peak Anode Voltage ....... 2000 volts
  Max. Screen Grid Voltage ...... 300 volts
  Max. Negative Control Grid Voltage .. 200 volts
  Max. Cathode Current .......... 150 mA
  Max. Peak Cathode Current ..... 400 mA
  Max. Screen Grid Current ...... 10 mA
  Max. Control Grid Current ..... 5 mA
  Max. Peak Control Grid Current . 25 mA
  Max. Anode Dissipation ........ 25 watts
  Max. Screen Grid Dissipation .. 3.5 watts
  Max. Vh-k .... 100 volts
  Max. Rg-k .... 25 kOhm

TYPICAL OPERATION — Single Valve Class A Amplifier (2 columns):
Anode Voltage = 300 | 500 volts
Screen Voltage = 250 | 200 volts
Control Grid Voltage = -12.5 | -14.5 volts
Anode Current = 83 | 50 mA
Screen Current = 8.0 | 1.6 mA
Anode Impedance = 24 | 39 kOhm
Mutual Conductance = 6.5 | 5.7 mA/volts
Cathode Bias Resistor = 140 | 280 ohms
Anode Load = 3 | 6 kOhm
Power Output = 6.4 | 11.5 watts
Total Harmonic Distortion = 6 | 12 %

2 Valves Push Pull Amplifier (Class AB1 | Class AB2):
Anode Voltage = 500 | 600 | 600 volts
Screen Voltage = 300 | 300 | 300 volts
Control Grid Voltage = - | -27.5 | -30 volts
Cathode Bias Resistor = 270 | - | - ohms
Peak AF Input Voltage Grid to Grid = 72 | 59 | 78 volts
Anode Current (Zero Signal) = 100 | 80 | 60 mA
Anode Current (Max. Signal) = 119 | 150 | 200 mA
Screen Current (Zero Signal) = 2.5 | 1.5 | 1.5 mA
Screen Current (Max. Signal) = 16.5 | 17.5 | 21 mA
Optimum Load Resistance Anode to Anode = 9 | 10 | 6.4 kOhm
Power Output = 32.5 | 47.5 | 80 watts
Total Harmonic Distortion = 2.7 | 2.2 | 3.5 %

CAPACITANCES:
  Cin .... 11 pF
  Cout .... 7 pF (measured with external shield)
  Ca-g1 .... <0.2 pF

===== PAGE 2 =====
807 — Ferranti — [courbes seules — pas de donnees tabulaires]
(Curve 629: Anode current vs Anode voltage, Vh=6.3V Vg2=300V, Vg1 +25 to -35;
 Curve 631: Grid current vs anode voltage; Curve 630: Screen current vs anode voltage)