A DC chopper reduced the voltage without producing heat whereas a rheostat
merely provides resistance and builds up heat. I had a rotary chopper
switch on my boat to dim overhead 12 volt lights in the main cabin. However
these were incandescent bulbs and I do not know how or whether they would
work with halogen bulbs.
On Thu, May 19, 2011 at 1:44 PM, Oudesluys <email@example.com> wrote:
> Well, you cannot use a normal SMITHS rheostat, it just has not got the
> wattage and will burn out instantly, causing a fire hazard. Anyway you
> cannot dim halogen bulbs very well as they will wear out very quickly.
> Just adjust the hight so you will not blind oncoming traffic or yourself
> in thick fog.
> Kees Oudesluijs
> [demime 1.01d removed an attachment of type text/x-vcard which had a name
> of coudesluijs.vcf]
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