Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 238
Types of low voltage neon negative-glow lamps suitable for use direct on 220 volts. Many different forms of lamps of thistype have been produced. The chiefaim must be to produce a brighter lamp.At higher voltages the production ofgreater candlepower is more feasible, andconsequently it might be…
Lighting
Internet Archive · University of Toronto Libraries · Public Domain Mark 1.0. Free to use for anything.
