Charles Pollak (born Karol Pollak), the inventor of the first electrolytic capacitors, found out that the oxide layer on an aluminum anode remained stable in a neutral or alkaline electrolyte, even when the power was switched off. In 1896 he filed a patent for an "Electric liquid capacitor with aluminum electrodes." Solid electrolyte tantalum capacitors were invented by Bell Laboratories in the early 1950s as a miniaturized and more reliable low-voltage support capacitor to complement their newly invented transistor. COUNT 5
QSN1 Who invented the first electrolytic capacitor? ANS1 Charles Pollak QSN2 In what sort of electrolyte does the oxide layer on an aluminum anode remain stable? ANS2 a neutral or alkaline electrolyte QSN3 In what year was the patent filed for an electric liquid capacitor? ANS3 In 1896 QSN4 What sort of capacitors were created by Bell Labs in the 1950's? ANS4 Solid electrolyte tantalum capacitors QSN5 Why did Bell labs create their new type of capacitor? ANS5 to complement their newly invented transistor