Water in the dummy load? Water cooled - sure. Water immersed? Even though I see it posted on the web, i have may doubts it would be a stable method.
Oil is the usual medium here. Excluding of course the pre-1980 transformer oils that were notorious for having contaminated PCB’s within or anything with flammability at working temperatures. Jerry Weiss WB9MRI > On Oct 26, 2015, at 9:27 AM, Paul Koning <paulkon...@comcast.net> wrote: > > >> On Oct 26, 2015, at 9:43 AM, Toby Thain <t...@telegraphics.com.au> wrote: >> >> On 2015-10-26 1:02 AM, Brian Archer wrote: >>> Even a 10W resistor will get really hot. I embed two 5W resistors into a >>> pentium class CPU cooler for a good compromise on space/thermal concerns. > > My favorite low tech dummy load is the one my father came up with: a couple > of resistors (carbon composite is best, carbon film or metal film will do), > 1-2 watt size, in a jar filled with water. Works just fine for 100 watts or > so, and is useable not just for power supplies but for HF transmitter testing. > > paul > >
