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.
November 2016 - Bourns RLB1112V4 series radial inductors are available for immediate supply from...
The circuit in the figure can be used in instruments, or other applications where it is desired to...
The circuit is from the 1994 National Semiconductor Linear Applications Handbook but can be...