Light Bulbs? You'll need to monitor voltage and current however as the resistance increases dramatically with current. RP On 8 September 2011 16:08, V G wrote: > Hi all, > > I would like to make a simple device for load testing, with adjustable > impedance (doesn't have to be continuously adjustable), so I can adjust t= he > amount of power it draws. The biggest concern I have is how to make a > suitable dummy load that can handle up to 100W. I'm thinking just a set o= f > 16 ohm load coils in parallel, witch switches to enable/disable. That wou= ld > let me do for example, 16.0, 8.0, 5.33, 4.0, 3.2, 2.67, 2.29, 2.0, 1.78, > 1.6, 1.45, 1.33, 1.23, 1.14, 1.07, 1.0 ohm impedance based on the number = of > coils I switch on. Where would I get such coils (around 1-2A, 16ohm)? Is > there a more convenient impedance to use? Is there a better way to do the > same thing? I would like to keep this cheap. Switches and coils is the > cheapest method I can think of at the moment. > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .