This shunt voltage regulator was found in an Electronic Design from the 90's. The power transistor must be in accordance with the load current and must be equipped with a heat sink.
This 1 A circuit was found in a Philips documentation from 1966. The transistor is of the time,...
We found this circuit in a Popular Electronics of the 90s. The circuit can also be used as a seat...
This two-digit timer was found in the 1983 Special Projects issue of Radio Electronics magazine. The...