've been wanting to investigate the actual capacitance of class-II MLCC, operating with the actual workingbias. And yes I know that MLCC manufacturers publish typical data.
Conceptually, the idea is simple: connect a LCR meter to the cap under test while adding in parallel a variable DC power supply.
But even a dimwit like myself knows that this would be a VERY STUPID IDEA. At best, the supply will add a parallel impedance which will load the reading. At worst, the LCR will let out the magic smoke.
What I have struggled to figure out, is how would one isolate the LCR from the supply and viceversa. I am aware that some higher end LCR meters incorporate a DC bias option.
Any ideas how that could be done?
Edit: I also have posted this same question in another forum.