Hello to all.
I'm afraid I have a naïve question again : I have problems reading certain schematics - this time around a basic power supply using the LM317 (1). The attached picture shows a 0.01uF capacitor placed immediately after the cathode , connected immediately to ground without any resistance nor any other device in between. To my innocent newbie's eyes, this looks like a massive opportunity for a burning battery. Now, as the same schematics was re-used by several web sites, I guess I misunderstood a few things but I don't know which ones.
...Still : shouldn't this capacitor be placed in serie between the source and the LM317 ? I tried this way, and it worked like a charm : steady 5.13V regardless of the source (provided the tension was high enough, of course). It's only afterwards that I realized I hadn't followed the schematics...
And is there a pdf or an intro somewhere teachings how to understand this type of details in schematics ?
Many thanks in advance.
(1) Just in case : since I'm at square one of my electronic pilgrimage, I don't use 240V AC as a source : only a 9V battery or a 12V, 9V, 7,5V, 6V etc. regulator.