I have been looking at building a Linear Power Supply for some time now, starting with the AC transformer and working through to the regulator etc. My question is, some of the circuits I have found online use a 0.1uF capacitor across each of the diodes in the bridge rectifier - so four caps - one for each diode. What purpose are these caps filling ? In each of the circuits, there are filter caps downstream of the rectifier which is fine, but are the caps across each of the diodes actually doing anything ? Is this best practice ?
Thanks in advance.