This circuit compensates for the brightness of an LED as a function of temperature. We found it in an Electronic Design from the 80s. The components admit equivalents.
This well-known siren configuration using complementary transistors is from a 1980s documentation. The...
This circuit was found in an old American magazine and could make use of more modern components...
This circuit is from the Philips integrated circuits manual of 1990. It is intended for magnetic...