The Modern Era of Aluminum Electrolytic Capacitors

Experts shared views on the development of aluminum electrolytic capacitors. Concepts emerged for increasing the specific capacitance of the anode after the introduction of wound foils for Al electrolytic capacitors. The use of electro-chemical etching from the mid-1930s from increased the effective surface of the aluminum anode greatly. The German manufacturer AEG-Hydra-Werke in Berlin was manufacturing electrolytic capacitors on an industrial scale from the early 1930s in addition to William Dubilier who advanced electrolytic capacitor technology based on the 1931 industrial-scale factory in Plainfield, New Jersey, US.