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GMI-11

General

Pulse modulator tetrode.

Envelope: glass.

Cooling: air.

Mass 300 g.

Lead diagram

General characteristics

Filament voltage, Volt 26
Anode voltage, Volt 1500
1st grid voltage, Volt -600
2nd grid voltage, Volt 1000
1st grid pulse voltage, Volt 130
Pulse duration 5 mks
Pulse frequency 900 Hz

Filament (heater) current, A 1.750.15
Pulse anode current, A no less than 14
1st grid pulse current, A no more than 2
2nd grid pulse current, A no more than 2.5
1st grid cut-off voltage, volt £ -600
Inter electrode capacitance, pF:

input

55
output 7.5
transfer £1
Operation time, h more than 300

Limited operating values

Cathode pulse current, A 20
Filament voltage, V 23.4 to 28.6
Anode voltage, V 10 000
1st grid voltage, V -700
2nd grid voltage, V 1000
Anode dissipation, W 85
1st grid dissipation, W 1.5
2nd grid dissipation, W 8