The result was the “dry” electrolytic capacitor. Another addition was a paper space between the turns of the foils. All of this reduced the size and price significantly. In 1936 the Cornell ...

differentiating them from the basic capacitor which is symmetric and indifferent to polarity. Once taken apart and unrolled, we would find two thin aluminum foils separated by a sheet of paper.

China's Ministry of Commerce announced Thursday that it would extend anti-dumping duties on imported paper for electrolytic capacitors from Japan for another five years, starting Friday.