|
|
|
|||||||
|
|
Thread Tools | Display Modes |
03-20-2011, 09:02 PM
|
#1 |
|
New Member
Join Date: Mar 2011
Posts: 1
|
varistors
Hi guys, i have a circuit board with a blown znr varistor,
the markings on it says 14k471u S45 so far i can only work out the 14 = diametre and 471 is the capping voltage. I'm not sure with that U stands for or the S45 i couldn't find this at farnell or rsaustralia. does any one know where i can get my hands one of these varistors. The manufacturer logo is a square with the letter M inside. thanks. |
|
|
|
03-22-2011, 09:16 PM
|
#2 |
|
Senior Member
Join Date: Dec 2010
City & State: Eureka, Mo.
Posts: 121
|
Re: varistors
http://search.digikey.com/scripts/Dk...&name=P7222-ND I think this is the correct one. 14mm 470v surge 4500
|
|
|
|
|
03-22-2011, 09:31 PM
|
#3 | |
|
o.O
Join Date: Sep 2007
City & State: Duisburg
My Country: Germany
Line Voltage: 230VAC 50Hz
Posts: 2,616
|
Re: varistors
Quote:
__________________
The USA have Barack Obama, Bob Hope, Stevie Wonder and Jonny Cash. We have Angela Merkel, no hope, no wonder, no cash. 
|
|
|
|
|
|
03-28-2011, 11:48 PM
|
#4 |
|
New Member
Join Date: Mar 2011
Posts: 3
|
Re: varistors
14D471K $.80 from WES that will work, it will blow at 300 volts AC
OR maybe 14D431K that will blow at 275v. I take it its just in the primary of of a psu ? |
|
|
|
|
03-29-2011, 02:21 AM
|
#5 | |
|
On my level
Join Date: Jul 2010
City & State: Bucharest
My Country: Romania
Line Voltage: 230VAC 50Hz
I'm a: Student Tech
Posts: 3,299
 |
Re: varistors
If you use an AC varistor you put it across the line. If you use the 275v one you need two and you put them across each primary cap.
__________________
Quote:
|
|
|
|
 |
| Thread Tools | |
| Display Modes | |
|
|
Linear Mode
