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GU-32V

TETRODE

The GU-32V beam-power double tetrode is used as an oscillator and a power amplifier in RF equipment.

GENERAL
Cathode: indirectly heated, oxide-coated.
Envelope: glass, no-base.
Mass: at most 100 g.

gu-32v(1)1.jpg
1 - heater; 2 - grid 1 of second tetrode; 3 - grid 2; 4 - cathode and beam-forming plates; 5 - heater (centre tap); 6 - grid 1 of first tetrode; 7 - heater; A1 - anode of first tetrode - top lead; A2 - anode of second tetrode - top lead

OPERATING ENVIRONMENTAL CONDITIONS
Vibration loads:
frequencies, Hz 50
acceleration, m/s² 59
Linear loads with acceleration, m/s² 245
Relative humidity at up to 40 °C, % 98

BASIC DATA
Electrical Parameters
Heater voltage, V 12.6
Heater current, A 0.72-0.88
Mutual conductance (at anode voltage 250 V, grid 2 voltage 135 V, grid 1 voltage -10 V of first tetrode, grid 1 voltage -100 V of second tetrode), mA/V 3-4.8
Anode current (at anode voltage 250 V, grid 2 voltage 135 V, grid 1 voltage -10 V of first tetrode, grid 1 voltage -100 V of second tetrode), mA 18-42
Interelectrode capacitance, pF:
input 6.2-9.4
output 3-4.4
transfer, at most 0.05
Output power (at anode voltage 400 V, grid 2 voltage at most 250 V, frequency 200 MHz), W, at least 14
Electrical parameters over 500 h of service:
oscillator power, W, at least 11
reduction in oscillator power at heater
voltage 11.3 V, %, at most 		20

Limit Operating Values
Heater voltage. V:
with heaters connected in series 11.3-13.9
with heaters connected in parallel 5.7-6.9
Anode voltage, V 500
Grid 2 voltage, V 250
Dissipation. W:
anode 15
grid 2 5