0,425Б5,5-12 Бареттер
0,425B5,5-12 Ballast Tube (Iron-Hydrogen resistor)
Lampe ballast (Régulateur Fer-Hydrogène)
Eisen-Wasserstoff-Widerstand

Initial stabilization voltage: 5.5 V
Final stabilization voltage: 12 V
Initial stabilization current: 0.39 A
Final stabilization current: 0.46 A
Maximum normal current establishment time: 5 min.
Durability: 10,000 hours

Thanks to Kalle Beljaev who donated this tube.

 

Left: Manufactured in 1965 by Anod, Dyatkovo, Russia (Анод, Дятьково) (old logo)     H = 94 mm (3"3/4)     Ø = 28 mm (1"1/8)
Right: Manufactured in 1979 by Anod (new logo)     H = 90 mm (3"1/2)     Ø = 30 mm (1"3/16)

 

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