This circuit was suggested by National Semiconductor and is present elsewhere on this site. The LM2575 is not very common today and should be mounted on a heatsink.
This very low voltage regulator for 3 V input (2 batteries) was obtained in a documentation from...
This circuit consists of an adapter that allows the reading of low currents at various scales. A...
This circuit generates signals that can be adjusted in a small range around the frequency of the...