With its "genuine superheterodyne circuit" and "standard 22½-volt battery," the Regency TR-1 not only launched portable audio, it also brought us gobbledygook technospeak. The Regency was the first ...

Here is a simple circuit for a one transistor Audion type radio powered by a 1.5 V battery. It employs a set of standard low-impedance headphones with the headphone socket wired so that the two sides ...

As World War II gripped Europe, Winston Churchill knew that the conflict would be fought on two fronts—on the battlefield and in the scientific lab. The race between the Allies and the Axis powers to ...

Jointly produced by Texas Instruments and TV accessory manufacturer IDEA (Industrial Development Engineering Associates) Corp, the TR-1 was the first consumer device to employ transistors. It was ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. During World War Two scientists and ...

So What Was the Transistor Good For? Transistors may have been useful to the phone company and to a handful of scientists building computers, but that wasn't enough to build an industry. Companies ...

And now a page from our "Sunday Morning" Almanac: October 18th, 1954, 61 years ago today ... the day Dick Tracy's wristwatch radio came its closest yet to reality. For that was the day Texas ...

This piece by Steve Greenberg is part of a series of essays to mark the 50th anniversary of the Beatles' first American television appearance on CBS's "The Ed Sullivan Show." It culminates with CBS ...