[Boatanchors] Baking Transformers

[Gary]

Eight hours  @  200 degrees will do just fine. Be sure to let it cool down 
slow.
Regards,
Gary
----- Original Message ----- 
From: "J. Forster" <jfor at quik.com>
To: "Mark K3MSB" <mark.k3msb at gmail.com>
Cc: "List Boatanchors" <boatanchors at mailman.qth.net>
Sent: Monday, November 02, 2009 6:42 PM
Subject: Re: [Boatanchors] Baking Transformers


> Good idea, but, IMO, you need a much longer bake. Tektronix used 24 to 48
> hours. You need to bake it long enough to let all the moisture escape from
> the center of the windings.
>
> You can easily make a bake oven with a a box and a lamp bulb and 
> thermometer.
>
> -John
>
> ===========
>
>
>> Recently acquired an SB-200 parts unit from a 10 year stay in a pole 
>> barn.
>> Power tranny tests OK for shorts and continuity etc.
>>
>> Before powering up (with a variac of course...)  I was thinking of 
>> putting
>> it in the oven to get rid of any moisture that may be present.
>>
>> I've heard 120-140F for 2 to 4 hours.
>>
>> What have you guys done
>>
>> 73 Mark K3MSB
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>
>
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