[Boatanchors] Baking moisture from power transformers

[hwhall at compuserve.com]

 I should have also mentioned that I remove or loosen any end bells to get maximum air exposure to the windings.

 

-----Original Message-----
From: hwhall <hwhall at compuserve.com>
To: boatanchors <boatanchors at mailman.qth.net>
Sent: Mon, Dec 22, 2014 1:37 pm
Subject: Re: [Boatanchors] Baking moisture from power transformers



 >
I've used a 60 or 75 watt bulb in a drop light, under the chassis or piece to be 
heated, blocked up appropriately, and with a makeshift cover of cardboard, 
towels, whatever.
>

I've done something similar to that and placed the item or the chassis in a 
corregated cardboard box along with a 60 watt bulb. Close the box top and stick 
in a thermometer (like a candy thermometer - I bought a surplus lab one) and 
connect the bulb to a variac or dimmer to fine tune the heating. I find that I 
need to check the temp every 15 minutes or so at first but can fine tune the 
energy input so that it can sit for hours without much temp change. If you don't 
have a variac or dimmer, leave the box top partly open and use a towel to cover 
the opening, adjusting the size of the opening to control temp.

Wayne
WB4OGM

 

 



 
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