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In Reply to: Change out the filter caps first! posted by Ralph on July 1, 2024 at 12:02:28:
The dielectric absorption of NPO caps is typically 10X worse than that of dielectrics such as polypropylene and polystyrene. I won't use them for any purpose other than RF. Polypropylene is readily available from sources like Mouser and Digikey, and I think Russian teflons are still being sold on the big auction site.
Edits: 07/02/24 07/02/24
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Follow Ups
- "They easily keep up with a lot of expensive film caps." - Triode_Kingdom 11:31:41 07/02/24 (20)
- The charts I saw were a bit different - Ralph 13:05:23 07/02/24 (19)
- RE: The charts I saw were a bit different - Triode_Kingdom 15:19:09 07/02/24 (18)
- Thanks! - Ralph 09:15:59 07/03/24 (13)
- And thank you, Ralph - 1973shovel 04:54:12 07/05/24 (3)
- Emperor's New Clothes - Ralph 09:58:16 07/05/24 (2)
- And let's not forget... - Triode_Kingdom 16:06:42 07/05/24 (1)
- You put your finger on one of the reasons even vinyl haters - Ralph 10:06:51 07/08/24 (0)
- Absolutely right - Triode_Kingdom 09:54:45 07/03/24 (8)
- The Boxes - Tre' 14:07:56 07/03/24 (1)
- That's Wild! (nt) - Triode_Kingdom 19:12:50 07/03/24 (0)
- The McGurk Effect - Tre' 14:03:34 07/03/24 (4)
- RE: The McGurk Effect - dave slagle 05:57:24 07/06/24 (1)
- RE: The McGurk Effect - Tre' 13:22:47 07/06/24 (0)
- RE: The McGurk Effect - Triode_Kingdom 19:21:12 07/03/24 (1)
- This is why we should not "trust our ears" or our eyes. nt - Tre' 20:57:36 07/03/24 (0)
- I would hit the like button if there was one. nt - Tre' 13:37:43 07/03/24 (0)
- More measurements - 1973shovel 16:35:16 07/02/24 (3)
- RE: More measurements - Triode_Kingdom 00:30:03 07/03/24 (2)
- "Was any scientific data presented in support of this claim?" - 1973shovel 03:56:27 07/03/24 (1)
- RE: "Was any scientific data presented in support of this claim?" - Triode_Kingdom 08:09:22 07/03/24 (0)