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The John Lawrence Collection
The NU8 mercury vapour half wave rectifier is fitted with an Edison Screw (ES) base. The device is an RG1-125 MV rectifier supplied by Mullard. Like the GU1 it was troublesome in service and was soon replaced by a redesigned and uprated version, the RG1-240A.
The Admiralty, however, persisted in using the obsolete version.
The classic envelope is 43 mm in diameter and, has an overall length of 125 mm.

This exhibit was last updated on 05 August 2006