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GMI-46B

Modulator triode for application in pulse modulators of radioelectronic equipment.

Cathode: indirectly heated, oxide-coated.

Envelope: metalceramic.

Cooling: forced air.

Mass: 3 kg.

Environmental parameters

Multiple impacts with acceleration, m/s2 . . . . . 392

Single impacts with acceleration, m/s2 . . . . . . 1470

Ambient temperature, °C . . . . . . . . . . . . -60 to+85

Relative humidity at +35 °C, % . . . . . . . . . . 98

Electrical Parameters

Heater voltage , V . . . . . . . . . . . . . . . . 26

Heater current, A . . . . . . . . . . . . . . . . 7.6-8.4

Residual anode voltage,kV . . . . . . . . . . . . 3.5

Grid voltage, V . . . . . . . . . . . . . . . . . . -200

Peak excess grid voltage, V . . . . . . . . . . . .1150

Negative cut-off voltage, V, not more than . . . . 200

Peak anode current, A, not more than . . . . . . 50

Peak grid current, A, not more than . . . . . . . 7,5

Interelectrode capacitance, pF:

input, not more than . . . . . . . . . . . . . . 210

output, not more than . . . . . . . . . . . . . 30

input-to-output , not more than . . . . . . . 3

Limit operating values

Heater voltage , V . . . . . . . . . . . . . . . . 24,7 - 27.3

Anode voltage, kV . . . . . . . . . . . . . . . . 30

Negative grid voltage, absolute value, V . . . . 300

Peak excess grid voltage, V . . . . . . . . . . 1500

Peak cathode current, A:

at 1/duty factor at least 500 . . . . . . . . . 55

at 1/duty factor at least 1000 . . . . . . . . 77

Dissipation, W:

anode . . . . . . . . . . . . . . . . . . . . 1000

grid . . . . . . . . . . . . . . . . . . . . . 60

Maximum pulse duration at peak cathode

current not more than 7,7A, uS . . . . . . . . 50

Minimum warm up time, S . . . . . . . . . . 30

Max. envelope temperature , °C . . . . . . . 150

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