Re: power supply discharge

On 27-Sept-24 11:07 pm, john larkin wrote:

 Given a benchtop power supply, you can turn the voltage up and then
down, and it goes down. Most have a substantial amount of output
capacitance, and can be driving an external cap too. So something
pulls the output down.
 I guess that there are no standards for this, but I've never seen a
supply that just hangs high when it's cranked down.
 I'm designing some programmable multi-channel power suplies and that
is one of many tangled issues in the project.
 

Be easy enough to sink current when the output voltage exceeds the set point by more than, say, 0.1V.
But there has to be a limit - connect the PS to your fully charged car battery, and set the PS to 10V, and you're not going to see a 10V output any time soon.
Sylvia.