This circuit is from a Mallory 1968’s documentation. The integrated circuit is of the time and the transistor admits equivalents.
Found in old American documentation, this circuit makes use of operational amplifiers from the 70s...
Toshiba LDO Regulators Toshiba has a wide variety of low voltage drop (LDO) linear regulators...
This circuit was published in a 1977 English magazine, but it can be easily assembled since all...