An Ultraviolet Flashlight for Illuminating Fluorescent Charts.
Abstract
A flashlight adaptation of an ultraviolet (UV) source has been made with a battery/converter supply powering a mercury vapor lamp. Two D-size common flashlight batteries power a single dc-ac modified Royer inverter whose output drives the UV lamp. The small circular UV fluorescent mercury-glow-discharge lamp is powered by a roughly 250-V square wave. It is eye safe. Illumination is confined to several square inches to preserve security in the presence of visible reradiation from the fluorescent map surface. The continuous operation capability exceeds 10 hr above roughly 50F. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 23, 1973
- Accession Number
- AD0755435
Entities
People
- B. J. Wilson
Organizations
- United States Naval Research Laboratory