Gas discharge tubes in transient overvoltage suppression - diyAudio
Go Back   Home > Forums > General Interest > Everything Else
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

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
Thread Tools Search this Thread
Old 9th April 2008, 12:50 PM   #1
diyAudio Member
Join Date: Jun 2006
Location: West Oxon
Default Gas discharge tubes in transient overvoltage suppression

Hi, anybody have any experience using these in AC power lines?

In particular, how I translate the commonly given figures for DC firing voltage and DC holdover voltage into AC applications? Don't want to asume a linear relationship, but do want to specify as close to maximum AC operating voltages (UK 250VAC +/- 10V max) as possible.

As usual manufacturers are ignoring comms....

Also - where best to place them? Shorting to earth from L + N, or across L + N, or both?

Thanks, Sod.
  Reply With Quote
Old 14th April 2008, 12:43 AM   #2
diyAudio Member
Join Date: Sep 2006
You want to put them between any line that is not tied to ground and ground. Here in Canada neutral is tied to ground in the breaker box so putting a discharge tube between neutral and ground is pointless.

I have seen then put between hot and neutral since neutral is the same thing as ground anyway. I prefer using ground though, it seams simpler to me since in some places neutral is not tied to ground.

The tube should not trigger at a premature voltage until you get into really high frequencys. I would guess well into the Khz range. You must take into account that 250vac has a peak of 353.5 volts (Vpeak=Vrms*1.414).
  Reply With Quote
Old 15th April 2008, 09:44 AM   #3
diyAudio Member
Join Date: Jun 2006
Location: West Oxon
Thanks for that
  Reply With Quote


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
G2 overvoltage ?? puginfo Tubes / Valves 3 30th July 2009 03:18 AM
LM386 RF suppression DrFrankenstein Chip Amps 4 4th May 2006 07:43 AM
LM3875 comes 'back to life' after turnoff transient suppression Beggar Chip Amps 24 27th August 2004 05:55 PM
RF suppression in guitar travis Instruments and Amps 2 19th April 2004 10:24 AM
overvoltage in my DC-DC theChris Parts 7 13th November 2002 02:37 AM

New To Site? Need Help?

All times are GMT. The time now is 09:54 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2