Varistor rating
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From: Jack// ani on 20 Dec 2005 07:45 Hi all, I've two varistor....from two different PCI dialup modem. TUR 07271 and ZOV 07D241K is written over it...was is the voltage and current rating likely to be, how to read it?? Thanks
From: John Popelish on 20 Dec 2005 10:30 Jack// ani wrote: > Hi all, > > I've two varistor....from two different PCI dialup modem. TUR 07271 and > ZOV 07D241K is written over it...was is the voltage and current rating > likely to be, how to read it?? > > Thanks > I think the 07 (or 07D) prefix refers to 7mm diameter. Is this about the size of the disk under the epoxy coating? I think 271 refers to a 27*10^1-270 volts AC and 241 refers to 240 volts AC. The DC peak rating will be about 1.4 times that. If you look up this size and volt rating MOV from almost any manufacturer, you can get some pretty good ideas of the surge current ratings. For example: http://www.epcos.com/inf/70/db/var_01/01590173.pdf
From: Jack// ani on 20 Dec 2005 10:46 Thanks John. Oh...yes, physical size is around 7mm as you said....I hope the rating are also true.
From: Franc Zabkar on 21 Dec 2005 01:17 On 20 Dec 2005 04:45:22 -0800, "Jack// ani" <nospam4u_jack(a)yahoo.com> put finger to keyboard and composed: >I've two varistor....from two different PCI dialup modem. TUR 07271 http://www.thinking.com.tw/db/pdf/varistor/Tvr-d.pdf > and >ZOV 07D241K is written over it...was is the voltage and current rating >likely to be, how to read it?? ZOV = zinc oxide varistor ??? - Franc Zabkar -- Please remove one 'i' from my address when replying by email.
From: varistors on 23 Dec 2005 01:48
TVR 07271 and ZOV 07D241K TVR and ZOV is the brand of the varistors which the manufacturers produce.They are electronic company in Taiwan and the factory in China mailand. Sometimes ZOV = zinc oxide varistor ,just like MOV=metal oxide varistor. Jashon in CHina Franc Zabkar 写é“： > On 20 Dec 2005 04:45:22 -0800, "Jack// ani" <nospam4u_jack(a)yahoo.com> > put finger to keyboard and composed: > > >I've two varistor....from two different PCI dialup modem. TUR 07271 > > http://www.thinking.com.tw/db/pdf/varistor/Tvr-d.pdf > > > and > >ZOV 07D241K is written over it...was is the voltage and current rating > >likely to be, how to read it?? > > ZOV = zinc oxide varistor ??? > > - Franc Zabkar > -- > Please remove one 'i' from my address when replying by email. |