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- Newsgroups: sci.electronics
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!hp-col!dag
- From: dag@col.hp.com (David Geiser)
- Subject: Re: Using big caps as computer power supply filters (?)
- Sender: news@col.hp.com (Usenet News)
- Message-ID: <1992Nov19.153933.6612@col.hp.com>
- Date: Thu, 19 Nov 1992 15:39:33 GMT
- References: <1992Nov17.165023.29174@julian.uwo.ca>
- Organization: HP Colorado Springs Division
- Lines: 21
-
- wlsmith@valve.heart.rri.uwo.ca (Wayne Smith) writes:
- > I would think that cap's that big would provide maybe 1
- > second of backup power.
-
- What will you gain with 1 sec of backup power? Does your 'puter
- and OS have a _graceful_ save and shutdown on power fail mode or
- does it just crash? I wouldn't expect anything graceful from a
- DOS machine.
-
- Problems you might have: inrush current at power-on may smoke
- your surge protectors, time constant for "power supply stable"
- signal may be too small with huge caps.
-
- If you want to add something that will help your 'puter survive a
- few cycles of line drop-out, try a ferro-resonant transformer.
-
- dag
- "If you want to get rid of those caps, advertise in alt.pyrotechnics"
- --
-
- To the cat, the experimenter is problematic.
-