John E. Coleman (ARS WA5BXO) wrote:
What was in these things? The inside of the can is lined with a perforated brittle screen perhaps some carbon stuff. The center post is connected to a foil which is wound in a spiral. I don't think it is laminated foil?
Not sure just what you have but electrolytics are/were made by a process that produced the dielectric when fired up. The foil was uninsulated and immersed in a chemical soup that coated the foil with a very thin layer of dielectric when activated. It's electro/chemical magic.
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