Products > Test Equipment
E36300 Series Programmable DC Power Supplies (E36311A, E36312A, E36313A)
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TheSteve:
I don't have them and they don't apply to my E36313A, but you can try your serial number:

https://support.keysight.com/KeysightdCX/s/product-lifecycle?language=en_US&c__prodno=E36313A

Enter your serial number, if there are notes related to it they will be displayed.
DarkLight:
Can you point me to some reference for [lab] power supplies without output capacitors?
gslick:

--- Quote from: eblake on December 06, 2021, 03:31:58 am ---This thread mentions several service bulletins (e.g. http://literature.cdn.keysight.com/litweb/pdf/E36313A-01.pdf and http://literature.cdn.keysight.com/litweb/pdf/E36313A-02.pdf

These links are now dead, and I cannot seem to find the documents, even using archive.org. Would anyone care to post the originals?

--- End quote ---

alm:

--- Quote from: DarkLight on July 22, 2022, 08:35:42 pm ---Can you point me to some reference for [lab] power supplies without output capacitors?

--- End quote ---
I'd look at high-speed power supplies (e.g. Kepco BOP) or for low current, a source measure unit. I can't find any hard data, but I'd think battery simulators (like Keithley 2300 series or Keithley 2281S, or the various Keysight offerings) would also have a pretty low output capacitance due to their sensitive current measurement and high current measurement bandwidth. R&S also has some models that can do this, but I don't know the models from the top of my head.

Designing a power supply without capacitance to be stable across reactive loads is tricky. That's why you'll see guidance about connecting inductive loads in most of their manuals. For example Kepco has models specifically compensated for capacitive or inductive load because the standard model doesn't do so well. The battery simulators will tell you to minimize lead inductance between power supply and DUT. That's why most general-purpose power supplies will have some amount of output capacitance.
nctnico:

--- Quote from: DarkLight on July 22, 2022, 08:35:42 pm ---Can you point me to some reference for [lab] power supplies without output capacitors?

--- End quote ---
For what purpose? If you are afraid about damaging a load when you connect it: you are using a PSU wrong. Disable the output and then connect the load. For most purposes, a capacitor-less PSU will bring more problems that it solves.
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