This circuit was obtained from an American 1980s documentation. The frequency depends on the crystal and the circuit may be a PNP that reaches the generated frequency.
Using a zener diode it is possible to change the linearity of the scale of an analog instrument by...
The MC1436 can also be used on this circuit found in Motorola's 1993 Linear Interface ICs. The...
This simple circuit imitates the sound of a machine gun and, when using a larger capacitor, a...