Products > Test Equipment
3.5kV power supply teardown
Gulftown:
--- Quote from: coppice on January 15, 2024, 10:24:55 pm ---Is this the kind of 2mm shrouded plug you need? https://warwickts.com/4655/PJP-226-IEC-2mm-Stacking-Shrouded-Banana-Plug . I bought some of these to use with my Voltech power analyser, and they work OK for that. They are not rated for 3.5kV, but plugs like this generally work OK to many times their rating.
--- End quote ---
No i dont think, that would fit.
The original sockets are very deep, and there is just a 2mm wide hollow screw at the end as a socket.
These are the original plugs, but they are very hard to find. So im swapping the sockets.
Gulftown:
So i replaced the binding posts with recessed 4mm banana sockets.
It works very well and the mod is easy and fully reversible.
The sockets are Stäubli SLB4-F6,3/N-X.
I attached the STL.
Gulftown:
I finished the design of the HV detector mod.
It has up to 10G Ohm input resistance, but i use it with 6GOhm and it does not affect the current measurement.
The LED changes from green to red, as soon as the output is >25V (adjustable).
It stays red as long as there is voltage above the threshold on the output.
The EPS3501 XL is actually a + and - 1750V supply, thats why i use 6GOhm input resistace.
It works very well and will definitely improve the safety of the power supply.
https://oshwlab.com/marius.meiswinkel/hv-sense-circuit
PCB Files
patrpl:
Hi,
I have a Pharmacia Biotech EPS 3500 in my lab that isn't working because it's missing some pieces just like the ones in the photo.
Can anyone help me by telling me if I can buy these pieces separately and where I can buy them online?
Thanks.
Gulftown:
That looks like a part of the output plug?
I swapped them to standard 4 mm banana jacks.
Except for the binding posts, you can buy more or less any electrical replacement part for this supply at mouser or digikey.
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