Found in Motorola's 1968 documentation, this control appears elsewhere in this section. The bridge diodes must have current and voltage according to the motor used as load.
Found in a 1964 Electronic Design, this circuit shows how to modulate a signal with a dynamic low...
This circuit was found in a 1971s English magazine. We can still assemble it using BC548...
This circuit was obtained in a Popular Electronics of the 90s. The circuit uses integrated from...