Found in a 90’s Radio Electronics, this circuit uses a component from the time, difficult to find today. It generates 12 tones in different octaves.
This variation of configuration that is common on our site was found in a 1980s documentation. LEDs can...
This circuit was obtained from ancient documentation using transistors of the time. The circuit...
This circuit was found in a 2005 Linear Technology application manual. The circuit is based on the...