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Old 18th November 2012, 04:09 AM   #1
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Location: Canandaigua, NY USA
Default Finally made a test load

For years I've cobbled together whatever test load I needed using clip leads and luck. I finally made up a proper load by mounting 10 40 ohm 50 watt resistors on a slab of heat sink. The metal was scrap I had around the shop. The banana jacks are arranged at 3/4" square so they can easily be shorted to make a single 4 or 16 ohm load out of the dual 8s. I don't normally test for long, but if needed it's easy enough to blow on it with a fan.
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Old 18th November 2012, 04:16 AM   #2
freax is offline freax  Australia
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hehe, nice work!
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Old 19th November 2012, 08:22 PM   #3
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Nice, I like it. Any inductance in each resistor doesn't add up.

Add an aluminum base to one "end" so that becomes the bottom and it stands up vertically. If it gets warm it will generate its own convection. And the smaller footprint will take up less space on your bench.
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Old 20th November 2012, 12:41 PM   #4
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Actually the center of gravity is such that it stands on its side with no problem. Thanks though, as I hadn't really thought of using it that way!
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Old 21st November 2012, 08:53 AM   #5
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That would probably even work on some of my huge amps with a small fan. Nice use for some unmatched pieces of heat-sink I might have laying around.
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