I'm building a circuit that has a number of servos on it. To eliminate servo chatter, I've seen recommendations to put in a 250uF cap (for the size servos I'm using). That much I can follow.
The question is - if I have multiple such servos, then placing multiple such capacitors seems... redundant, as the GND and VCC lines leading into them are the same line. Should I still place a capacitor per servo, as close as possible to the servo power pin? Should I just have a single larger capacitor elsewhere?
Additionally, my board needs to intermittently shut off its own power supply for a second or two, and then have enough power left to turn the supply back on (the supply has an EN pin that I can control it with to minimize the quiescent current). My idea was to use a .2F - 1F supercap to keep enough power in the circuit to last it through this shutdown, but how does that factor in the capacitor count and placement question from above?