ДРГМ-70-2 дуговой ртутный газонаполненный модулятор
DRGM-70-2 Hollow cathode glow modulator
Lampe à cratère
Glimm-Entladungs-Röhre

Manufactured by • Fabriqué par • Hergestellt von : MELZ (Moscow electro-lamp plant)

Helium-mercury filled crater lamp for use in facsimile devices. The luminous flux can be modulated up to about 1 MHz.

 

Diamètre • Diameter • Durchmesser : 31 mm • 1" 1/4
Hauteur • Height • Höhe : 66 mm • 2" 5/8

Unlike most crater lamps, which are cold cathode lamps, the DRGM-70 as a hot cathode (filament, 1). Between the cathode and the anode (2) is placed a hollow cylindrical shield (3) with a nozzle (4) whose diameter is 1 mm. Arc discharge occurs within the channel of the nozzle.

 

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