This circuit generates damped sounds imitating a drum or other percussion instrument with alteration of the double T components. We find it in an old American documentation.
This filter was found in documentation from the 90s. The cutoff frequency is 2900 Hz. Changes can be...
A touch of the sensor makes the load bistable (load) connected in Q1. For a BC548, a 6 V or 12 V...
Found in old documentation, this circuit uses components that are still common on the market. The...