Erica Synths EDU DIY Wavefolder Eurorack Module Kit User Manual

Page 45

Capacitors C5 and C6 are additional decoupling capacitors. If you inspect the PCB, you’ll

see that these are placed as close to the power supply pins of the ICs as possible. For

well-designed, larger PCBs you will find decoupling capacitors next to each IC. Like the

others, their job is to simply compensate for any unwanted noise in the supply rails. If the

input voltage drops, then these capacitors will be able to bridge the gap to keep the voltage

at the IC stable. And vice-versa - if the voltage increases, then they’ll be able to absorb the

excess energy trying to flow through to the IC, which again keeps the voltage stable.

Typically, 0.1 uF capacitors are used for this purpose.