This circuit was obtained in the 1990 Motorola Linear Databook. The circuit uses a 139 series comparator, but other series can be used. The power source need not be symmetric.
This circuit was found in a Delco 1965 publication. Transistors may be current equivalents according...
This sequencer allows the use of switches or sensors to generate the steps of a bipolar stepper...
We found this symmetrical regulator in a documentation from the 70s. The circuit uses components...