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 circuit was found in documentation from the 1980s. It is powered by the audio signal that must...
Damped oscillators can be used to produce sound from percussion instruments such as the triangle, bell,...
Found in Radio Electronics from the 90s, this circuit produces pulses to test an infrared...