Mullard thermionic triode valve
The PM5X general purpose and audio output valve is part of the 1927 six volt range from Mullard. The details on the valve emphasise that there is practically no glow from the filament. The PM filament was an oxide coated azide type.
Details
- Category:
- Radio Communication
- Object Number:
- Y7001.804
- Materials:
- metal (unknown), glass and plastic (unidentified)
- Measurements:
-
overall: 104 mm 45 mm,
- type:
- thermionic valve and triode valve
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