| Products > Test Equipment |
| HP/Keysight 66311B magnetic field leakage |
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| coppercone2:
use sand paper blocks to deburr sheet metal edges. IMO don't bother even getting near sheet metal if you don't have sanding blocks of the right size ready, its asking for a bad day this thread makes me want to get a sheet metal mini deburring tool https://www.aircraftspruce.com/catalog/topages/dbledeb.php and I also want to try to etch mu-metal sheet now. |
| AVGresponding:
I prefer to use a file. Especially if I'm on a job fabricating a lot of metal trunking, sandpaper/emery paper wouldn't be durable enough. |
| coppercone2:
it is easy to mangle with a file if you dont make a good cut but the sand paper solution is quite dodgy like you say. stones might also be an option (machinist stone) Diamond file is a good option too, but slow. otherwise get a very fine file (typically small). or sanding sticks but they will get torn up too |
| Hydron:
--- Quote from: Gulftown on December 01, 2023, 11:27:31 am ---Okay I found a solution I think. I will use a 230V/24V transformer and use it as an bucking transformer to reduce the input voltage on the primary of the original transformer. That should work without introducing side effects. I will keep you updated. --- End quote --- Bucking transformer is indeed the right way to go if you need to drop mains voltage a little. If you do it in the configuration shown in Fig. 4 here then you also avoid saturation issues on the bucking transformer: https://sound-au.com/articles/buck-xfmr.htm I would test by dropping the voltage a bit with a variac first though to be sure it's actually going to solve the issue before spending the time and money wiring up the bucking transformer. |
| Hydron:
--- Quote from: electronomicon on November 24, 2023, 12:04:26 am --- --- Quote from: Hydron on November 23, 2023, 11:03:11 pm ---Make sure you have the voltage set correctly, e.g. 240 for europe rather than 220 (go higher rather than lower). Flux leakage often gets a LOT worse the closer it is to saturation. Mine does make enough humming noise on the ~245-250V they deliver to me that I'm not surprised you're seeing issues near CRTs. --- End quote --- Thanks for the suggestion! I just set my 33120A (the upper device in the stackup) from 220 V to 240 V and its effect on the CRT is now barely noticable. I hope with some additional shielding on the 34401A’s transformer it will be little enough to easily ignore it. --- End quote --- Does the 34401A not also have a 240V line voltage setting? Or was that not enough to fix the issue? Glad the suggestion helped with the other unit. |
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