English: An early electrolytic capacitor from 1914. It consists of two sheets of foil about 3 cm square separated by a fabric sheet, immersed in an electrolyte solution, sealed inside a glass tube, with electrodes attached to the foils at either end. It had a capacitance on the order of 2 microfarads. It was used as a decoupling condenser in a crystal radio.
Date
before 1914
date QS:P,+1914-00-00T00:00:00Z/7,P1326,+1914-00-00T00:00:00Z/9
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