A Motion Picture Arc-Lighting Generator Filter
The general means heretofore employed to reduce the commutator noises emitted by arc lamps operated from direct current generator sets is outlined, and the deficiencies of such equipment are noted. The design of an electrical filler unit, which is extremely compact as compared to previously employed equipment and which is capable of handling the full load output of studio stage-lighting generators, is described. This filter completely suppresses all arc-lamp noises resulting from generator commutator ripple, may be permanently associated with any studio generator set, eliminates the need for repeated installations of large numbers of choke coils on the set, and requires no servicing. The unit is capable of withstanding current overloads in excess of 100 per cent indefinitely.
- Print ISSN
- 0097-5834
- Published
- 1943-11
- Content type
- Original Research
- DOI
- 10.5594/J09790