History
The PP3 appeared when portable transistorized radio receivers became common, and is still called a "transistor" battery by some manufacturers. The Eveready company claims that it introduced this battery type in 1956. Early transistorized radios and other equipment needed a low voltage battery, but the lowest voltage commonly available, small battery at that time was a 22.5V battery made for vacuum tube/thermionic valve hearing aids and for photo flash gun (using flash bulbs). The 22.5V voltage was at the upper limit of the transistor voltage ratings, and it was clear that what was needed was a battery of lower voltage and high enough capacity to run the transistor radios for a reasonable time.
Read more about this topic: Nine-volt Battery
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“False history gets made all day, any day,
the truth of the new is never on the news
False history gets written every day
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the lesbian archaeologist watches herself
sifting her own life out from the shards she’s piecing,
asking the clay all questions but her own.”
—Adrienne Rich (b. 1929)
“The thing that struck me forcefully was the feeling of great age about the place. Standing on that old parade ground, which is now a cricket field, I could feel the dead generations crowding me. Here was the oldest settlement of freedmen in the Western world, no doubt. Men who had thrown off the bands of slavery by their own courage and ingenuity. The courage and daring of the Maroons strike like a purple beam across the history of Jamaica.”
—Zora Neale Hurston (1891–1960)
“The greatest honor history can bestow is that of peacemaker.”
—Richard M. Nixon (1913–1995)