Hey everyone. In order to use just one power source for my robot, I'm building several voltage regulators to distribute power as needed. At the moment I have two LM138s (http://www.ti.com/product/lm138), which I'm going to use to run 7.5v to the four motors driving my bot (one LM138 to two motors). I've successfully soldered on regulator circuit, according to this diagram here:
Now my question is, when I solder the second circuit onto the board (sharing the same source voltage and ground obviously), am I going to replicate that schematic again exactly, or will I have to make changes to it? I don't know much electrical engineering, but that 0.1 uf capacitor is essentially going to be shared by both circuits, since it's just bridging the source voltage to ground. Replicating that diagram again will put another 0.1 uf capacitor in parallel with the first one, and I'm not sure how it will affect my circuits, if at all.