ZNR vs MOV for surge suppression - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 26th September 2005, 05:10 PM   #1
diyAudio Member
 
Join Date: Jul 2005
Location: Quebec, Canada
Default ZNR vs MOV for surge suppression

I'd like to add a little lightning protection to my projects but I'm a little confused over the choice between ZNR's and MOV's. They seem to offer the same protection.

Can anyone offer advice on choosing between the two.
I'm running off North American 120V

Thanks.
  Reply With Quote
Old 27th September 2005, 03:59 PM   #2
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Hi,
I think because MOVs are designed for surge absorption they will perform better than Zeners (ZNR?)
Ther are some other materials available now that do a similar job.
__________________
regards Andrew T.
  Reply With Quote
Old 27th September 2005, 07:45 PM   #3
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
I think you should consider surge arresters (I think they are called that) with neon (small tube with neon). They can take even more than a VDR.
__________________
/Per-Anders (my first name) or P-A as my friends call me
  Reply With Quote
Old 27th September 2005, 08:10 PM   #4
diyAudio Member
 
Join Date: Jul 2005
Location: Quebec, Canada
Thanks for the replies, I guess ZNR's aren't as popular as MOV's.
They are not zeners, I can see how that association was made
They are ZnO Varistors "Transient/Surge absorbers"

Panasonic ZNR

Maybe I'll stick in a couple of MOV's and ZNR's each on the lines, just to be sure !
  Reply With Quote
Old 27th September 2005, 08:41 PM   #5
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
If you live out in the country a VDR or zener won't take a direct hit of a lightning. Then you must use those gas tubes and it's not sure they protect to 100% either.

http://www.elfa.se/pdf/60/06050009.pdf
__________________
/Per-Anders (my first name) or P-A as my friends call me
  Reply With Quote
Old 27th September 2005, 09:20 PM   #6
diyAudio Member
 
Join Date: Jul 2005
Location: Quebec, Canada
Thanks again.

I had never seen these before.
GDT's (Gas Discharge Tube) look like the way to go.
  Reply With Quote
Old 2nd October 2005, 08:56 AM   #7
mzzj is offline mzzj  Finland
diyAudio Member
 
Join Date: Jul 2005
Location: 65N 25E
actually better combine all of them. GDT+varistor is pretty standard.
GDT's are bit slow and have high ignition voltages, smaller spikes are left to varistor. And in some cases you can find also a TAZ-diode(transient absorbtion zener diode) handy as they are even faster.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Wich Suppression Capacitor to block Mains emi? samsagaz Solid State 26 13th November 2010 11:53 AM
Mains Noise Suppression Seeker Everything Else 34 4th August 2010 03:57 PM
Noise suppression bypass caps on Si bridge Steerpike Power Supplies 2 23rd July 2008 10:33 PM
LM386 RF suppression DrFrankenstein Chip Amps 4 4th May 2006 08:43 AM
RF suppression in guitar travis Instruments and Amps 2 19th April 2004 11:24 AM


New To Site? Need Help?

All times are GMT. The time now is 09:29 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2