Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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Re: mains spike absorber

209.215.72.237

Posted by Jon Risch on January 24, 2000 at 16:42:03

In Reply to: mains spike absorber posted by Borris on January 17, 2000 at 23:42:18:

The disc looking thing could be a varistor, a sort of heavy-duty back to back zener diode, which clamps above a certain voltage threshold. The black thing the wires go through is most likely a ferrite bead or clamp, which is just a way of shorting out HF using the reactance of the ferrite material at RF frequencies.

For more information on DIY AC line filters
and surge supressors, see:

http://members.xoom.com/Jon_Risch/surge.htm

Also, use the search engine here to search the Tweaks section for ferrite beads, etc.

Jon Risch

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

Kimber Kable

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