TUBE: KT63
FICHIER SOURCE: sheets/179/k/KT63.pdf
FABRICANT: Marconi
ANNÉE: non datée (catalogue Marconi, prix en £/shillings "10/6")
LANGUE: en

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Marconi KT63
Output Tetrode

Marconi KT63 is a suitable output valve for all A.C. receivers where medium power is required with high efficiency.

Nominal Rating, see curve.

Inter-electrode capacities.
A—G    0.8 µµF
G—E    9.8 µµF
A—E    9.0 µµF

[En-tête sur courbes — APPROXIMATE DATA]
FILAMENT VOLTS    6.3
FILAMENT CURRENT  0.7 amp
ANODE VOLTS       250 max
SCREEN VOLTS      250 max
MUTUAL CONDUCTANCE 2.5 mA/V at Ea=Es=250v, Eg=-16.5v
[TAKEN AT Es=250v]

[Graphe : ANODE and SCREEN CURRENT (mA) vs ANODE VOLTS, courbes Eg=0 à Eg=-30]

Dimensions : 119 × 45 mm. Octal base ; for connections see pages 4-5.

Typical Operating Data.

Single Valve, Class A.
Anode and screen voltage    250
Anode current               34 mA
Screen current              5.5 mA
Power output                3.0 watts
Optimum load                7000 ohms
Bias resistance             420 ohms

Two Valves, Class AB1
Anode and screen voltage    250
Combined anode current      64 mA
Combined screen current     14 mA
Power output                6 watts
Anode—anode load            12000 ohms
Common bias resistance      250 ohms

Notes.
KT63 may be triode connected to form a small power valve suitable for driver stages.
Used in this way its mutual conductance is 2.4 mA/V and its impedance 3200 ohms.

Price - - 10/6
[page numérotée 30]