[Milsurplus] [Boatanchors] Mercury Rectifiers

[C.Whitaker]

de WB2CPN Agn
You want a choke input to the DC filter.
Not a capacitor input.
If you have a choke input, check to see
if it's shorted.
73  Clete


On 4/23/2012 1:42 PM, J. Forster wrote:
> Thanks everybody.
>
> I neglected to explain these 866s are in an MC 1 Battle Announcing system
> on a Museum Ship.
>
> We want to keep it as original as possible, but have had issues with the
> 866s blowing over.
>
> Thanks all,
>
> -John
>
> ==================
>
>
>
>
>
>> Yes I did. Sorry I wasn't more clear about that. It's one of those
>> assumptions made after decades of experience, figuring others must posses
>> the same knowledge. Clearly not a good assumption to make in matters of
>> HV!
>>
>> ~ Todd,  KA1KAQ/4
>>
>> On Mon, Apr 23, 2012 at 12:03 PM, Jim Wiley<jwiley at alaska.net>  wrote:
>>
>>> **
>>> He means filaments only - no plate voltage.  30 minutes or so should  do
>>> the trick.
>>>
>>>
>>> - Jim, KL7CC
>>>
>>>
>>>
>>> Todd, KA1KAQ wrote:
>>>
>>> On Mon, Apr 23, 2012 at 11:31 AM, J. Forster<jfor at quikus.com>
>>> <jfor at quikus.com>  wrote:
>>>
>>>
>>>
>>>   Hi,
>>>
>>> Is there an issue with Mercury pooling in rectifiers, like the 866, in
>>> long term storage that would cause them to blow over more easily?
>>>
>>> If so, is there a fix?
>>>
>>>
>>>
>>>   AFAIK John, you simply need to run the rectifiers at temperature for
>>> 10-15
>>> minutes (a half hour is even better) to re-vaporize the mercury. I've
>>> also
>>> seen guys roll the tube around to spread the mercury into a thinner
>>> surface
>>> coating to speed things up. Not sure if that's required.
>>>
>>>
>
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