Found in an old American publication, this circuit generates signals of various waveforms. The frequency depends on the components. Operational amplifiers are from the period.
Suggested by Philips documentation from 1968, this circuit uses components from the era that can...
This circuit uses NO sensors and was found in an American publication in the 90s. The supply must...
Found in American documentation from the 1990s, this circuit generates signals in the 350 to 500...