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The taC" SIX-PHASE RECTIFIER
^ Is YEARS AHEAD
TYPE H28-70 SIX PHASE RECTIFIER
*The type H28-70 is a six-phase fullwave rectifier operating from Standard 3-phase lines. It employs the Magnesium-Copper Sulphide metallic rectifying stacks which proved so remarkably successful during wartime. This is ascribed to their ability to withstand high temperatures, overloads and mechanical abuse — The H28-70 is rated 70 amperes. It is especially designed for the new 7and 8-mm carbons. Also well suited for the 6 and 7-mm trim. Note that six-phase full-wave is equivalent to 12-phase half-wave rectification which heretofore has only been available for large power installations. H28-70 is approved by Underwriters' Laboratories.
For the most beautiful light on your
screen, put six-phase power into your
lamps.
Distributed by National Theatre Supply.
JVL OTION Picture projection has taken a stride forward! Brilliant, flickerfree light can now be obtained from standard A. C. power. By doubling the number of impulses per second, disturbing ripples are eliminated. Experts in the field — many leading studios and theatre circuits — already know the superiority of the "C & C" Six-phase rectifier.* The industry is rapidly moving forward with six-phase rectification. You too can improve the performance of your lamps. Write for additional information today!
THE TYPE C TRANSFER SWITCH
Another "C & C" contribution to better performance and simpler installation. All wiring is prearranged and standardized. Switching from one rectifier to another during performance — should it ever be necessary — is instant and convenient.
TYPE 6367 "Start-Stop" Switch for remote control of rectifier.
McColpin-Christie Corporation, Dept I 4922 South Figueroa Street Los Angeles 37, California Gentlemen:
Please send me a copy of your Six-phase Arc Lamp Rectifier Catalog.
NAME
ADDRESS
CITY STATE
COLPIN-CHRISTIE
LOS ANGELES 3 7, CALIFORNIA
INTERNATIONAL PROJECTIONIST
March 1947