Found these in the broken Sony telecorder we had in the attic. Tested the metal strips between the mica, and it proved to be absolutely pure silver. No color whatsoever in the solution when some strips were dissolved, and a heavy mat of AgCl dropped instantly when salt water was dripped in!
These have A LOT of silver in them. The foils are THICK. Plus, the connector that wraps around each end is ALSO silver. I estimate between half a gram to a full gram of silver per capacitor (depending on the capacitance rating of each). Some had many layers and were noticeably heavy in the hand! The core with the most layers, after the plastic was removed, weight a full 2 grams!
Here's a pic of an intact capacitory and two different cores from others, plus a test tube with the silver chloride recovered from dissolving the metal foils from a core in 50% nitric and dropping with aqueous NaCl.
These have A LOT of silver in them. The foils are THICK. Plus, the connector that wraps around each end is ALSO silver. I estimate between half a gram to a full gram of silver per capacitor (depending on the capacitance rating of each). Some had many layers and were noticeably heavy in the hand! The core with the most layers, after the plastic was removed, weight a full 2 grams!
Here's a pic of an intact capacitory and two different cores from others, plus a test tube with the silver chloride recovered from dissolving the metal foils from a core in 50% nitric and dropping with aqueous NaCl.
