New Portable High-Intensity Arc Spotlight
The spotlight to be described includes many features which are the result of an extensive investigation of desirable characteristics in such devices. An integral transformer supplies low-voltage alternating current to the arc from any 115-volt, alternating-current outlet at a drain of only 10 amperes. A double-element variable-focus optical system allows the spot size to be continuously adjusted with negligible light loss.
- Print ISSN
- 0097-5834
- Published
- 1949-10
- Content type
- Original Research
- DOI
- 10.5594/J15207
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