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- Newsgroups: sci.electronics
- Path: sparky!uunet!cs.utexas.edu!torn!skule.ecf!manson
- From: manson@ecf.toronto.edu (Bob Manson)
- Subject: help with surge control and varistors
- Message-ID: <Bu7z9D.1Fq@ecf.toronto.edu>
- Organization: University of Toronto, Engineering Computing Facility
- Date: Mon, 7 Sep 1992 17:58:25 GMT
- Lines: 25
-
-
- Being forced to pay $120 to get a Cannon Bubblejet printer fixed after a
- (possible) voltage spike has caused one of my collegues to start thinking
- more seriously about surge protection. He has a Dell notebook with
- an auto voltage/frequency sensing power supply. When he travels,
- he uses the Dell power supply--through a regulator which I put together
- for him--to power the Bubblejet printer. (The Cannon was not being powered
- in this fashion when it got hit...it was plugged into it's own power
- adapter.)
-
- The question is, if it *was* a voltage spike that hit the printer should we
- be building some sort of varistor front end for the supplies(with different
- varistors for different countries), or should the Dell power supply have all
- of this stuff built in? The Bubblejet "power supply" is just an AC adapter;
- I've never seen an adapter yet that had much more than a couple of diodes
- and a capacitor so I wouldn't be surprised at a spike being passed through
- it.
-
- Any suggestions--including hints about using and choosing varistors--would
- be much appreciated.
-
-
- thanks
- bob
- (manson@civ.utoronto.ca)
-