Newsgroups: sci.electronics
Path: utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: Re: Substituting Caps oin Logic Supplies
Message-ID: <1989May24.154332.29113@utzoo.uucp>
Organization: U of Toronto Zoology
References: <484@dalek.UUCP>
Date: Wed, 24 May 89 15:43:32 GMT

In article <484@dalek.UUCP> sjb@dalek.UUCP (Seth J. Bradley) writes:
>... The question is, are the new ultra-high caps
>(i.e. 3.3F at 5.5 V) which are designed for power backup
>suitable for use as power supply filter capacitors?

In general, no -- their internal resistance is too high.  Substantial
currents flow in and out of filter capacitors during the AC cycle.
-- 
Van Allen, adj: pertaining to  |     Henry Spencer at U of Toronto Zoology
deadly hazards to spaceflight. | uunet!attcan!utzoo!henry henry@zoo.toronto.edu