This circuit was suggested by Signetics in 1980s documentation. The circuit makes use of the hard-to-obtain component of our day. It is for reference only.
Found in na 1970 EDN this circuit has a parallel regulation providing a symmetrical output of 15 V....
This circuit is from an American documentation from the 50's. The transistor is the CK721, and the...
The figure shows how to use an operational circuit as a voltage divider. The circuit is from a...