[Boatanchors] Baking moisture from power transformers
hwhall at compuserve.com
hwhall at compuserve.com
Mon Dec 22 15:37:22 EST 2014
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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.
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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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