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 interesting circuit allows to obtain symmetrical voltages from a simple battery. Among its...
This circuit was obtained from an old American documentation having a limited adjustment range....
This circuit was found in a Texas Instruments optoelectronics manual and can work with any...