This circuit was found in a 1967 Electronic Design and can be adapted to use modern equivalent components. The circuit provides a symmetrical voltage with the same value as the single input voltage.
This circuit appears in similar versions on this site. This is from a Popular Electronics from the 80's. The...
This two-transistor delay circuit from the 1960s was found in documentation from the time....
This circuit operates with signals from 150 kHz to 1 MHz and makes use of a known NAND CMOS gate....