Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes Calculators Education Engineering magazine articles Engineering software Engineering smorgasbord RF Cafe Archives RF Cascade Workbook 2018 RF Symbols for Visio - Word Advertising RF Cafe Forums Magazine USAF Radr Shop Sponsor RF Cafe RF Electronics Symbols for Visio RF Electronics Symbols for Office Word RF Electronics Stencils for Visio Thank you for visiting RF Cafe!
Innovative Power Products Passive RF Products - RF Cafe
Anatech Electronics (RF Filters) - RF Cafe

About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024


    Kirt Blattenberger,


RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:


everythingRF RF & Microwave Parts Database (h1) - RF Cafe

Electronics for Tomorrow
April 1955 Popular Electronics

April 1955 Popular Electronics

April 1955 Popular Electronics Cover - RF CafeTable of Contents

Wax nostalgic about and learn from the history of early electronics. See articles from Popular Electronics, published October 1954 - April 1985. All copyrights are hereby acknowledged.

Cooling devices based on the  Peltier effect were first demonstrated by French physicist Jean Charles Athanase Peltier when he noted the presence of heating or cooling at an electrified junction of two different conductors types (opposite of a thermocouple). Widespread commercial use depended on finding efficient materials that could be produced inexpensively. Music synthesizers, to be practical, needed to await the availability of miniaturized electronics like transistors and memory elements. Light amplification similarly depended on affordable sources to be anything more than a laboratory curiosity. Fortunately, by the mid 1950s such entities were becoming reality. This article reports on a few of those items.

Electronics for Tomorrow

Music, television, recording, and air conditioning are major fields expected to benefit from new electronic developments recently demonstrated by RCA. Revealed to the public for the first time are an "Electronic Music Synthesizer," an "Electronic Light Amplifier," a new TV tape recorder, and an all-electronic cooling system.

The "Music Synthesizer" is an elaborate device that generates any tone produced by the human voice or musical instruments, as well as tones beyond the capabilities of these sources, including tones never heard before. Capable of solo or ensemble effects, it is expected to open new horizons for composers who could take advantage of its almost limitless possibilities.

Brigadier General David Sarnoff, RCA - RF Cafe

Brigadier General David Sarnoff, RCA head, watches demonstration of "Electronic Light Amplifier."

Another use of the synthesizer could be in phonograph record production. Since the unit can produce any sound imaginable, it may be used to rejuvenate old pressings into new records with full tonal range and complete freedom from noise and distortion.

In addition, the synthesizer can provide remarkably authentic renditions of older music since it can produce accurately the tones of the old instruments for which many great composers wrote. For music lovers, scholars, and historians, this feature should prove of great value.

Research and development of the synthesizer is under the direction of Dr. Harry F. Olsen, Director of Acoustical and Electromechanical Research at RCA's David Sarnoff Research Center, Princeton, N.J.

RCA's Dr. Harry F. Olsen - RF Cafe

RCA's Dr. Harry F. Olsen operates keyboard of the new "Electronic Music Synthesizer."

Equally sensational as a major development in a field followed by millions, but still largely experimental, is RCA's "Electronic Light Amplifier." Described as a new form of illumination, "electronic light" (also called "cold light") does not depend on combustion or incandescence as does conventional light. Rather it results from the excitation of electrons in certain luminescent materials. By using greatly amplified values of "electronic light," RCA engineers hope to perfect - by late next year - a new type of video known as "mural television" in which the present TV picture tube will be replaced by a thin, flat screen that can be hung on the wall like a picture. This development, combined with a wider use of transistors, is expected to eliminate the need for all electron tubes in TV sets and reduce its size to that of a small box, containing all the circuitry and controls needed to enjoy programs on the wall mounted screen.

Electronic light and its amplification have potential applications in other fields such as radar and x-ray work, but details on these are not yet available.

Heralded as a major step into a new era of "electronic photography" is RCA's new TV tape recorder, now installed for field tests at the National Broadcasting Company. Both color and black-and-white telecasts can be recorded on tape, and an unlimited number of copies made quickly and cheaply. Ultimate uses of this device are forecast in the motion picture industry which could use the process to make movies without any photographic developing. Pictures can be viewed the instant they are taken. The new device will also aid telecasting, education, and industry in general, to say nothing of its tremendous potential for home use. TV tape recorders are expected to become as widely used as sound tape recorders.

The fourth electronic wonder at hand is an air conditioner that works without any moving parts, motors, or compressors - a completely noiseless machine. Prototype of this development is a small electronic refrigerator in which cooling is achieved by the so-called "Peltier effect" in which current through two dissimilar materials produces a cooling effect in the region of the junction, like a kind of reverse thermocouple effect. The problem here is largely one of researching the right materials to do the job.



Posted October 15, 2013

Innovative Power Products Couplers
Innovative Power Products Passive RF Products - RF Cafe

Please Support RF Cafe by purchasing my  ridiculously low−priced products, all of which I created.

These Are Available for Free