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 > > > > > **************************************************************************** > * > > Lost Password: > > http://www.tech-assist.org and select "Login Problems?". > > Email Archives: > > //www.freelists.org/archives/techassist/ > > **************************************************************************** * > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ > ***************************************************************************** Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/