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A transistor radio is a small portable radio receiver that uses transistor -based circuitry. Following the invention of the transistor in —which revolutionized the field of consumer electronics by introducing small but powerful, convenient hand-held devices—the Regency TR-1 was released in becoming the first commercial transistor radio. The mass-market success of the smaller and cheaper Sony TR, released in , led to the transistor radio becoming the most popular electronic communication device of the s and s. Transistor radios are still commonly used as car radios.
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- The best noise-canceling headphones to buy right now
- Knockoff Dyson Vacuum Batteries Are Cheap, but They Aren’t Worth the Risk
- Camera Accessories
- Sony VG-C1EM Vertical A7-Series Battery Grip
- Sony Xperia 1 review
- Home accessories.
- Best Sony headphones 2021: budget, premium, Bluetooth, noise-cancelling
- Audio Amplifiers
The best noise-canceling headphones to buy right now
A transistor radio is a small portable radio receiver that uses transistor -based circuitry. Following the invention of the transistor in —which revolutionized the field of consumer electronics by introducing small but powerful, convenient hand-held devices—the Regency TR-1 was released in becoming the first commercial transistor radio. The mass-market success of the smaller and cheaper Sony TR, released in , led to the transistor radio becoming the most popular electronic communication device of the s and s.
Transistor radios are still commonly used as car radios. Billions of transistor radios are estimated to have been sold worldwide between the s and The pocket size of transistor radios sparked a change in popular music listening habits, allowing people to listen to music anywhere they went. Beginning around , however, cheap AM transistor radios were superseded initially by the boombox and the Sony Walkman , and later on by digitally-based devices with higher audio quality such as portable CD players , personal audio players , MP3 players and eventually by smartphones , many of which contain FM radios.
Before the transistor was invented, radios used vacuum tubes. Although portable vacuum tube radios were produced, they were typically bulky and heavy. The need for a low voltage high current source to power the filaments of the tubes and high voltage for the anode potential typically required two batteries. Vacuum tubes were also inefficient and fragile compared to transistors and had a limited lifetime. Bell Laboratories demonstrated the first transistor on December 23, There are many claimants to the title of the first company to produce practical transistor radios, often incorrectly attributed to Sony originally Tokyo Telecommunications Engineering Corporation.
Texas Instruments had demonstrated all-transistor AM amplitude modulation radios as early as May 25, , [6] [7] but their performance was well below that of equivalent vacuum tube models. However, as with the early Texas Instruments units and others only prototypes were ever built; it was never put into commercial production.
RCA had demonstrated a prototype transistor radio as early as , and it is likely that they and the other radio makers were planning transistor radios of their own, but Texas Instruments and Regency Division of I. The use of transistors instead of vacuum tubes as the amplifier elements meant that the device was much smaller, required far less power to operate than a tube radio, and was more resistant to physical shock.
Since the transistor's base element draws current, its input impedance is low in contrast to the high input impedance of the vacuum tubes. The typical portable tube radio of the fifties was about the size and weight of a lunchbox and contained several heavy, non-rechargeable batteries — one or more so-called "A" batteries to heat the tube filaments and a large to volt "B" battery to power the signal circuits. By comparison, the transistor radio could fit in a pocket and weighed half a pound or less, and was powered by standard flashlight batteries or a single compact 9-volt battery.
The 9-volt battery was introduced for powering transistor radios. Previously, Texas Instruments was producing instrumentation for the oil industry and locating devices for the U. Navy and I. The two companies worked together on the TR-1, looking to grow revenues for their respective companies by breaking into this new product area.
Davis, Jr. He was assigned the project due to his experience with radio engineering in World War II. The President of I. One acts as a combination mixer-oscillator, one as an audio amplifier, and two as intermediate-frequency amplifiers.
The look and size of the TR-1 was well received, but the reviews of the TR-1's performance were typically adverse. In February , the second transistor radio, the 8-TP-1, was introduced by Raytheon. It was a larger portable transistor radio, including an expansive four-inch speaker and four additional transistors the TR-1 used only four.
As a result, the sound quality was much better than the TR An additional benefit of the 8-TP-1 was its efficient battery consumption. In July , the first positive review of a transistor radio appeared in the Consumer Reports that said, "The transistors in this set have not been used in an effort to build the smallest radio on the market, and good performance has not been sacrificed.
Chrysler and Philco announced that they had developed and produced the world's first all-transistor car radio in the April 28th edition of the Wall Street Journal. Improving upon the ideas, Tokyo Telecommunications Engineering Corporation made its first functional transistor radio in Other Japanese companies soon followed their entry into the American market and the grand total of electronic products exported from Japan in increased 2.
In August , while still a small company, Tokyo Telecommunications Engineering Corporation introduced their TR five-transistor radio under the new brand name Sony. The TR was also the first transistor radio to utilize all miniature components.
It is estimated that only 5, to 10, units were produced. Like the TR-1 it was offered in four colors: lemon, green, red, and black. In addition to its smaller size, the TR had a small tuning capacitor and required a new battery design to produce the proper voltage. It used the nine-volt battery , which would become the standard for transistor radios.
Approximately , units of the TR were imported in The TR was the first transistor radio to sell in the millions, leading to the mass-market penetration of transistor radios. The success of transistor radios led to transistors replacing vacuum tubes as the dominant electronic technology in the late s. Prior to the Regency TR-1, transistors were difficult to produce. Raytheon and Zenith Electronics transistor radios soon followed and were priced even higher.
Transistor radios were extremely successful because of three social forces — a large number of young people due to the post—World War II baby boom , a public with disposable income amidst a period of prosperity, and the growing popularity of rock 'n' roll music. The influence of the transistor radio during this period is shown by its appearance in popular films, songs, and books of the time, such as the movie Lolita.
In the late s, transistor radios took on more elaborate designs as a result of heated competition. Eventually, transistor radios doubled as novelty items. The small components of transistor radios that became smaller over time were used to make anything from "Jimmy Carter Peanut-shaped" radios to "Gun-shaped" radios to "Mork from Ork Eggship-shaped" radios.
Corporations used transistor radios to advertise their business. These novelty radios are now bought and sold as collectors' items amongst modern-day collectors. Since the s, the popularity of radio-only portable devices declined with the rise of portable audio players which allowed users to carry and listen to tape-recorded music.
This began in the late s with boom boxes and portable cassette players such as the Sony Walkman , followed by portable CD players. A common type now is the portable digital audio player. This type of device is a popular choice with listeners who are dissatisfied with terrestrial music radio because of a limited selection of music and reception problems.
However, transistor radios are still popular for news, talk radio , weather, live sporting events, and emergency alert applications. From Wikipedia, the free encyclopedia. Portable radio receiver. This article is about an electronic device. For the fourth studio album by M.
Ward , see Transistor Radio album. Radio portal. Thought Catalog. The Boston Globe. October Engineering Science and Education Journal.
Retrieved 13 April Archived from the original on 20 August Retrieved 20 April Earnshaw Editors and Engineers, Ltd. Wallace-Homestead Book Company. ISBN Retrieved 16 October Retrieved 18 February Retrieved 16 September SONY : the private life. Houghton Mifflin Company. Retrieved 19 January Retrieved 1 September Retrieved 14 October Galaxy advertisement. November Retrieved 18 December Antique Radio Classified.
John V. June March Authority control. Integrated Authority File Germany. Spain France data United States. Categories : Receiver radio History of radio Radio electronics Transistors in radio in technology Products introduced in Types of radios.
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Knockoff Dyson Vacuum Batteries Are Cheap, but They Aren’t Worth the Risk
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Did you know that all receivers are amps but not all amps are receivers? Let me make that easy for you. A receiver amplifier is a speaker that comes with an inbuilt radio. With a multitude of features, a receiver amplifier features volume controls, preamp, input selection, and so on. However, you can look or devices that have separate components.
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