Tube-number record
GM 7630
0 archive entries
GM 7630 is a tube type in the TubeDatabase archive (class: Tube and Universal Tester). Recorded specifications: brand Philips, construction Other / special, base Pertinax, socket Special / none, and maximum plate voltage 177.5 V. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassTube and Universal Tester
BaseSpecial / none
Filament220 V @ — mA
Construction
Primary TypeOther / special
Rectifier TypeEZ2
EnvelopeMetal cabinet
Base MaterialPertinax
SectionsTube Tester / Universal Meter
Filament / Heater
MaterialIndirectly Heated
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Short Circuit Testing | 177.5 V | — | — | — | — |
Application Notes
The GM 7630 is designed for use as a universal measuring device and tube control apparatus. It utilizes perforated test cards to configure the internal bridge circuit and transformer taps for specific tube types.
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