Akela, my female German Shepherd Dog, shown here at 10 months old. This is Brutus, my black Alsatian who sadly passed away at the age of 10. He lived in South Africa in a city by the sea, which was ironic since he hated water. He was a wonderful, intelligent and kind friend who will be sorely missed.
Sony, who is often credited with developing the first portable radio, didn't come out with theirs until 1957. Don Pies Regency TR1 Website/via. It didn't take long for transistors to take over and for them to shrink down to integrated circuits to the point where you can now get an entire Radio Shack in an iPhone. It all started 60 years ago with this.
The first high-frequency transistor was the surface-barrier germanium transistor developed by Philco in 1953, capable of operating up to 60 MHz. These were made by etching depressions into an N-type germanium base from both sides with jets of Indium(III) sulfate until it was a few ten-thousandths of an inch thick.he transistor provides current gain, allowing a relatively large current in the collector to be switched by a much smaller current into the base terminal. The ratio of these currents varies depending on the type of transistor, and even for a particular type, varies depending on the collector current.