Thank you for any help! This is my first question post, so let me know how I can improve it.
I'm working on my first Altium project, which is to remove several DC-DC converters that were causing noise in our atomic force microscope system -- two of them are shown in the first schematic. Note that the red writing is how we modified these manufactured boards to fix the noise problems. Ironically, I think they were meant to isolate the rest of the system from noise caused by the motor drivers.
I am wondering which of these capacitors and diodes are unnecessary now that the dc-dc converters are being removed from the design. My guess is that the input capacitors are all unnecessary, they are to smooth the input voltage to the dc-dc buck converters. I think that the smaller capacitors at the output are also for smoothing the higher frequencies of ripple caused by the converters. But do I need to keep some of the capacitors between 24V/15V (was previously 12V)/GND? The situation has changed in that I am no longer stacking "floating" voltages to provide 24V, so maybe I can just get rid of all of them? And I must admit I'm not actually sure what the diodes are for.
For context, these two lines are being used to power a row of motor drivers, which are each configured to run at either 12 or 24V -- the second schematic shows one of them... they are all identical except for which 0 ohm resistor is populated.