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Projection Engineering, May, 1930
Page 3
Mr. Engineerare YOU FAMILIAR WITH THIS PUNCTURE PROOF FILTER CONDENSER?
In the old days of "movies" it was common for screen pictures to flicker, and films to break. Audiences were tolerant of such interruptions— at first — but soon learned to prefer the theaters where these occurrences were rare.
Long before the advent of the talking-picture, audiences developed a highly critical attitude toward the theater that did not present its full performance smoothly and continuously throughout. This attitude quickly reflected itself in the box-office receipts.
It is essential today that equipment developed for photographic and sound projection be depended upon to perform its function without interruption whenever used.
The voice-amplifier of the theater is similar in construction to the audio-amplifier of the radio receiver and transmitter. It differs mainly in size and power. The power-supply filter bears a similar relation. Thus, in the design of such equipment the projection engineer can often profit by the experience of the radio engineer.
Thirty-one prominent radio manufacturers have designed into the power-packs of their radio receivers the Amrad Mershon Electrolytic Filter Condenser. Up to the present time, over three million of these units have been used — evidence of its performance in service.
The Amrad Mershon Electrolytic Filter Condenser Will not break down in use Offers a large capacity in a small space Costs less per microfarad Has a useful life of many years.
The engineer engaged in the design, construction, or operation of projection equipment will be interested in the new booklet "Puncture Proof Filter Condensers," soon to be off the press.
The coupon, attached to his letter-head, will bring him a complimentary copy.
THE AMRAD CORPORATION
220 College Avenue Medford Hillside, Massachusetts
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