I have a Keithley 5kV power supply (2290 model) that I use for high energy physics experiment. It has resolution of 1V and current resolution of 1uA. The range that it offers is +0V to +5000V via its SHV connectors i.e. unipolar.

I wanted to know if there is a workaround to make the instrument have the same range in the negative range as well. There should be proper internal isolation in the negative polarity otherwise an unsafe negative polarity is not preferred at any cost.

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    \$\begingroup\$ Some Matsusadas are reversible in the way you describe. Check your manual. \$\endgroup\$
    – winny
    Oct 21, 2021 at 12:18
  • \$\begingroup\$ What do you mean by reversible? Do I have to open it up and switch a component inside? \$\endgroup\$ Oct 21, 2021 at 12:19
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    \$\begingroup\$ Yes, or reverse the entire output module somehow. I was not in the need for negative voltage so I just glanced over it. \$\endgroup\$
    – winny
    Oct 21, 2021 at 13:10
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    \$\begingroup\$ Yes, that’s given. My point is that it’s far from unthinkable to have a reversible high voltage power supply. But by bipolar, you mean output + and - simultaneously? That won’t be possible. \$\endgroup\$
    – winny
    Oct 21, 2021 at 14:04
  • 1
    \$\begingroup\$ Ok, then the word causing confusion is "bipolar". If you would be able to flip the polarity as with the Matsusada, it's still a unipolar power supply, just negative. \$\endgroup\$
    – winny
    Oct 21, 2021 at 14:35


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