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Re: Mercury Migration

Posted By: SVP Neon Equipment
Date: Monday, 20 October 2008, at 3:36 p.m.

In Response To: Mercury Migration (Winslow)

> I had some problems here and there with
> mercury migration in units run on electronic
> supplies. I use CPI's which to my experience
> are great except for this problem here and
> there. My fix is to make sure the mercury is
> distributed behind each electrode shell. I
> thought this was a frequency thing with the
> trans? Its one thing if this happens in a
> window unit, but I hate to have my wholesale
> customers tell me its happening in self
> contained channels. LEDs have enough pros on
> the neon as it is. Any Feed back here will
> help my fight!

It is my understanding the merc. migration is caused by a DC current component in the secondary, which causes the vapor to move in one direction. The time-honored way of "fixing" it is to reverse the secondary leads thereby causing the merc. to go the other way. Of course this is not a fix at all, but it will tell you if it is the power supply: Reverse the leads and if the problem shifts to the other end you are sure it's the power supply (don't know what else it would be though). In that case, contact the mfg. or switch brands - or both.

Mark

Messages In This Thread

• Mercury Migration -- Winslow -- Friday, 17 October 2008, at 1:20 p.m.
  • Re: Mercury Migration -- SVP Neon Equipment -- Monday, 20 October 2008, at 3:36 p.m.
  • Re: Mercury Migration -- Rebecca -- Tuesday, 6 January 2009, at 5:30 p.m.
    • Re: Mercury Migration -- neontek -- Wednesday, 7 January 2009, at 5:13 a.m.

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