THOMSON CSF TH 331 TETRODE Mode D'emploi

THOMSON-CSF
GROUPEMENT T UBESELECTRONIOUES
The TH 331 is a forced
of coaxial structure.
plifier operating up to 1000 MHz without grid current in
T.V. translators
the same channel with
52 dB.
The anode can dissipate 7 kW.
Electrical
Type of cathode
Heating
Filament voltage ( I )
Filament current
Peak cathode
Interelectrode
- input (g2 tied to gl)
- output (g2 tied to gl)
- cathode-anode
Amplification
Transconductance,
Mechanical
Mounting position
Anode cooling
Minimum airflow
Corresponding pressure drop
Maximum inlet air temperature
Maximum outlet
Maximum temperature (3)
Net weight
Dimensions
In the high frequency operation, the cathode is subjectedto considerableback bombardment which raisesits temperature.
(1)
After the circuit has been
Of the cathode with resulting short life. Please ask for information
For any voltage application please seethe instructions given in page 3.
For 30 C inlet air temperature
(2)
At any point of ceramic insulators. For maximum tube life, this temperature must not exceed200 C. The cooling airflow
(3)
must be established before application Of any voltaW and maintained during 3 minutes at least after the filament voltage
has been removed.
THOMSON -CSF GROUPEMENT
TH 331
TETRODE
air cooled ceramic
It is especially designed for linear am-
handling both sound and vision signals in
a crossmodulation level better
GENERAL
approx.
current
capacitances, approx. :
factor gl - g2, average
average
(2)
air temperature
for proper tube operation, the filament voltage must be reduced to prwent overheating
and 7 kW anode dissipation.
TUBES ELECTRONIQUES
metal tetrode
than
CHARACTERISTICS
for any special application.
8, rue Chasseloup-Laubat
DATA TEG 2078
TH 331
February 1972 - Page1/7
thoriated tungsten
direct
5.0±2 %
65
15
43
9
o. 07 pF
5
50 mA/V
vertical
forced air
m3/mn
7
millibar
7
45
IOO
250
3.6
kg
see drawing
75 • Paris 15e Tél.: 566.70.04