| Products > Test Equipment |
| Dynaload DLF 100-100-1500 (100V / 100A /1500W DC load) teardown & repair |
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| Inverted18650:
Oh no! Uhhhb...You busted me...I’m not a label expert. :palm: I fixed my compliment, hopefully it’s acceptable this time. |
| nctnico:
Time for the final chapter. I have the board fitted which controls the fans based on temperature. The sensor is an NTC resistor on a piece of thin FR4. This is glued to the aluminium with a Cyanoacrylate glue which bonds very well to FR4 and aluminium. Some hotmelt serves as a strain relief for the wires. The bit of masking tape with the black dot is there for use with the thermal camera. The fans turn on at 40deg C and get to full throttle at 50deg C. Pumping 1.2kW into it helped to get the temperature up! Another job is the top cover. When center punching the holes for the step down transformer I noticed that the aluminium isn't the usual soft stuff and it has a lot of tension in it. The center punches already deformed the bottom plate a little bit. Now the top cover has been banged up pretty bad and it is warped in every wich way it can. To make it somewhat straight I decided to fit a support bar. To keep it flush I used rivets. This should be the end of the project but during testing I found it cumbersome to mount the wires at the back. For that reason I decided to do one more mod: front binding posts! This ofcourse needed some additional internal wiring which I wanted to keep away from the rest as much as possible. |
| alm:
Nice job! I imagine those binding posts are not rated for the full 100A, though. |
| jmkasunich:
Old post, but I hope the OP can help. nctnico wrote: "I forgot to mention it in the post above but all the manuals (with calibration procedures and schematics) can be found online." I just acquired a couple DLF series loads. Been searching for manuals/schematics/etc but my google-fu is apparently weak. Any suggestions? I have DLF 100-50-250 (little guy) and DLF 400-600-4000 (the beast). Thanks! John |
| nctnico:
You can download a zip file with the service manuals here: http://www.ko4bb.com/getsimple/index.php?id=manuals&dir=06_Misc_Test_Equipment/Transistor_Devices Note that not all exact models are covered but it seems they put most of the loads together from standard boards so a load with similar specs and look will probably be similar enough. |
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