Tweakers' Asylum

• Isn't this risky.... - Uncle Mike 16:00:11 05/22/09 (5)
  In Reply to: RE: question on Auricap AC tweak - uf values? posted by Duster on May 22, 2009 at 14:24:22

  not to mention not in electrical code? Why not use "Y" rated caps as you should? Or do we need to live on the edge?
  
  

  ---

  • RE: Isn't this risky.... - 1973shovel 17:01:56 05/22/09 (4)
    In Reply to: RE: Isn't this risky.... posted by Uncle Mike on May 22, 2009 at 16:00:11

    It would appear not.
    

    • Auricap AC rating   (Open in New Window)

    
    

    ---

    • These are NOT rated for AC line exposure. - Al Sekela 15:51:59 05/23/09 (2)
      In Reply to: RE: Isn't this risky.... posted by 1973shovel on May 22, 2009 at 17:01:56

      There is a difference between an AC voltage rating and the safety rating for AC line exposure. See the linked pdf file for a basic tutorial.
      
      Capacitors not rated for AC line exposure can develop resistive leaks upon repeated exposure to line voltage spikes. These can cause the capacitor to get hot and catch fire.
      
      There are polyester, polypropylene, ceramic, and metallized paper capacitors rated for AC line exposure (X is for line to neutral while Y is for line or neutral to ground). Of the rated caps, I've found the Wima metallized paper to have the best audio properties.
      

      • Evox-rifa tech note on suppression capacitor basics (pdf fil   (Open in New Window)

      
      

      ---

      • But it MUST be true. I saw it on the Internet! - 1973shovel 19:40:55 05/25/09 (1)
        In Reply to: RE: These are NOT rated for AC line exposure. posted by Al Sekela on May 23, 2009 at 15:51:59

        It makes you wonder about the liability issue with them publishing an AC usage chart.
        
        Thanks for the update, Al.
        
        

        ---

        • Well, they don't claim power line suitability. - Al Sekela 16:09:17 05/26/09 (0)
          In Reply to: RE: But it MUST be true. I saw it on the Internet! posted by 1973shovel on May 25, 2009 at 19:40:55

          I suppose there are other AC applications that don't require continuous AC power line exposure.
          
          The caps may well be safe. It is expensive to get UL (or equivalent) listing. They would have to be careful about statements along the lines of "just as good..." We just don't know, and the risk is not worth it to me.
          
          

          ---
    • RE: Isn't this risky.... - benie 21:02:57 05/22/09 (0)
      In Reply to: RE: Isn't this risky.... posted by 1973shovel on May 22, 2009 at 17:01:56

      Thanks for the link, never seen that before, food for thought.
      But as another poster said, I like the AM PE much better.
      
      

      ---

Post a Followup:

This post is made possible by the generous support of people like you and our sponsors:

Kimber Kable

---

[ Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2025, Audio Asylum, all rights reserved ]

---

[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]

---