[TechAssist] Re: Question - internal 120V AC line varistors- surge suppressors
- From: "Keith Trumbla" <keith@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 10 Dec 2003 12:43:37 -0600
I found a good generic from Digi-key. Their part # P7181-ND about 2 bits a
piece.
HTH
Keith Trumbla
BEM Electronics Inc.
Suite 212-530 Century St.
WPG. MB. R3H 0Y4 Canada
Ph.204.775.2875 Fax.204.774.9192
www.bemelectronics.com
----- Original Message -----
From: "J Silverman" <greentron@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, December 10, 2003 12:29 PM
Subject: [TechAssist] Re: Question - internal 120V AC line varistors- surge
suppressors
> They are rated in AC volts, joules, and number of times they can withstand
> absorbing that number of joules. You buy the highest number of joules you
> can afford that will fit in the space allotted. Or you can leave it out
and
> buy a seperate box with surge suppressors, noise filters, and fuses or
> breakers.
> Jerry Silverman
> Greentron Inc
> 4 Newland Ave
> Greenville SC 29609
> 864 232 3889
> Fax 271 2080
> mailto:greentron@xxxxxxx
> ----- Original Message -----
> From: "Gary McCartney" <gary@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, December 09, 2003 7:24 PM
> Subject: [TechAssist] Question - internal 120V AC line varistors- surge
> suppressors
>
>
> > In general, what is a good quality and rating of a varistor to use at
> > the 120V ac input of equipment where the varistor (surge suppressor) has
> > been blown up by a power surge?
> >
> >
> > Example, I have a Brother Intellifax 1270 fax machine that came in , hit
> > by a power surge. I found the varistor at the 120V AC power input (Z1 on
> > the power supply board) blowed up real good, along with the fuse which
> > was black as coal. These were the only faults as the fax machine works
> > now, however I don't know what varistor to use in place of the original.
> > Whatever the part was, it did a great job at protecting the power
> > supply. I will let the machine run awhile after repair in case the
> > mosfet switcher transistor was stressed in the action.
> >
> > What would be the recommended voltage and amperage surge rating to
> > replace the original with, perhaps purchased from Digikey or other
> > similar generic parts supplier?
> > --
> >
> > BTW, I titled the message the way I did because I thought I'd get more
> > responses than if I titled it, "brother fax machine....etc, etc.......)
> >
> >
> > Thanks for any help.
> >
> >
> > Gary McCartney
> >
> > McCartney Electronics
> > Guelph Ontario Canada
> > Est. 1984
> > email: gary (at) number63.ca
> >
> >
>
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