Tube-number record
GU1
0 archive entries
GU1 is a tube type in the TubeDatabase archive (class: Rectifier). Recorded specifications: brand Osram, construction Mercury Vapour, socket 4-pin, and maximum plate voltage 1000 V. The archive does not yet hold a photographed example of this type.
BrandOsram
ClassRectifier
Base4-pin
Construction
Primary TypeMercury Vapour
Rectifier TypeHalf Wave
EnvelopeGlass
SectionsSingle
Filament / Heater
Warm-up Time30s
Absolute Maximum Ratings
Application Notes
On no account must the H.T. voltage be applied at the same time as filament voltage. Filament should be switched on 0.5 to 1 minute before H.T. After transit or disuse, run filament for 15 minutes before applying anode voltage. Series resistance required to limit current if positive voltage > 15V is applied.
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