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Re: dummy load / test load for Victor speed controller
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Originally Posted by WizardOfAz
We'd like to build a test setup for the Victors. Anybody have a suggestion for a cheap fixed resistance dummy load? I don't want to use a motor because the motor is not fixed resistance and it's hard to measure motor power output. Would like to have the ability to set the resistance to about 0.32 ohms to get a 40 A max current test, and also to something like 2.5 ohms for a 5 A max current test. Would like to use a fixed resistor that would spread the heat dissapation over a large area so it doesn't get dangerously hot (500+ watts for the 40 A test).
I can put a big resistor in a can of oil like we do in RF power testing. Anybody got a better idea?
Bill
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How about a 500' roll of #10. An RF load would not get you to the current you want to draw but you could parallel 10 resistors, 5 ohm at 10 watt and drop them in the oil for cooling and be OK I bet.
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Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.
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