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Another DL project...

avionic

avionic

" Black Knights " F-15 back shop EW avionics
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Last night at work.Things were a little slow.I had just recieved two more Arcol 300 watt 8 ohm resistors and was looking for some scrap aluminum for a heatsink. Went out to the scrap metal dumpster.At first glance all I saw was iron and stainless,no aluminum...But buried down in the bottom of the bin was a decomissioned 150 HP 3-phase Allen-Bradley freq.drive..:scratch2: Now that is bound to have a heatsink in it.:scratch2: Dug that sucker out of the bin and drug it back to the machine shop. Field stripped it and...."Jackpot":banana:

Drilled and bottom tapped it for 1/4-20 x 1/2" hex cap screws..
 

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golana said:
nice find. May I ask what DL is?
Or, what the project might be?
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Dummy load. Mount those serious resistors to the big heatsink, and you now have a device that provides a load when testing an amplifier's output. I bet this one would heat a room nicely when it's dissipating around 600 watts. :D
 
Jailtime said:
:yikes: Do you still have the big Yamaha amp to give her a run at 4 ohms?
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Yes..It has a little problem in the buffer circuit. Mark B has a PC5002M he wants to load check with 2 ohm.---Fire extinguisher will be close at hand.:D
 
Add a little thermal compound and torque down the fasteners.
 

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That variable frequency drive probably also have six or so electrolytic capacitors the size of a Foster's beer can in them. Maybe make a huge power supply with them.
 
JonL said:
That variable frequency drive probably also have six or so electrolytic capacitors the size of a Foster's beer can in them. Maybe make a huge power supply with them.
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Sure did and SCR's the size of a pack of cigarettes.Thats what was mounted on the heatsink.Threw all that back in the dumpster..I was only looking for the heatsink.
 
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avionic, I would gladly pay for you to regularly throw whatevers left over from your dumpster in a box and ship it to me,,:D
 
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