This tone control was obtained in the Audio Handbook of the National Semiconductor of 1977. The circuit controls the signals of medium frequencies in a wide dynamic range as shown in the diagram.
Found in Popular Electronics from the 90s, this circuit triggers a bicolor LED to indicate whether a...
The game is an adaptation of the real version where the toothpicks taken are replaced by red LEDs...
With the circuit shown in the figure, we have a logic signal to activate a calling device when...