[sdiy] Practical inductor question

Tom Wiltshire tom at electricdruid.net
Sun Nov 24 20:23:32 CET 2013


If you do use silicone, watch out for the kind that smells like UK fish and chips - it's got acetic acid in it (hence the vinegar smell), and over time it corrodes stuff nearby. 

On 24 Nov 2013, at 18:31, ASSI <Stromeko at nexgo.de> wrote:

> On Sunday 24 November 2013, 03:50:30, David Ingebretsen wrote:
>> I thought I could just put a dob of silicone sealant in the gap where the
>> wire exits the core (like these ones:
>> 
>> http://www.fair-rite.com/cgibin/catalog.pgm?THEONEPART=5698181221&SEARCHAG
>> AI N=Y#select:onepart).
>> 
>> Silicone doesn't have any weird properties that will mess with the
>> inductance does it? I can't see how it could, but I thought I'd ask before
>> I do something that will be very hard to undo.
> 
> There are several different kinds of "silicone".  You definitely want one 
> that has "neutral curing" and probably a single-component system (the most 
> common of these cures by using water vapor from the surroundings).  Most 
> manufacturers would list this under "potting compound" rather than 
> "sealant".  Another option would be epoxy and/or polyurethane, but there's 
> an even more bewildering range of systems for different applications.
> 
> The classic method in the old days was some sort of sticky wax that became 
> malleable (and progressively more sticky) when you rolled it between fingers 
> or a dab of resin/laquer to fix the bobin and outgoing wires.  I guess this 
> would still work. :-)
> 
> 
> Regards,
> Achim.
> -- 
> +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+
> 
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