This circuit shows how to add a 1st regulator to a source that already has a step for this purpose. The circuit was found in an American power supply documentation.
This version of an astable CMOS with the 4069, and which appears elsewhere on this site and in...
Found in na 1970 EDN this circuit has a parallel regulation providing a symmetrical output of 15 V....
This circuit is the receiver for the previous remote-control transmitter. We found it in the same...