Indicated for automotive use, this circuit was found in a Popular Electronics from the 90s. The circuit uses a power transistor that must be equipped with a heatsink.
This circuit was obtained in a 1960 documentation of General Electric. It is applied in the...
This circuit produces the sound of a motorcycle or an outboard motor. The frequency is adjusted in the...
Another application circuit for the NE567 is shown in the figure. It consists of a decoder for...