We found these circuits in a 90s Radio Electronics. In them, we have the way to turn a load on and off using pressure switches. The circuit can be used with other types of direct current load.
This circuit, from a 1985 documentation, produces several types of sound effects selected by the...
This optical pass-through shield can be used in various applications, such as object sensing or...
Found in a 90s documentation, this circuit makes use of D1, a switching diode that is uncommon today....