The circuit presented is a documentation for radio amateurs from 1978. Implemented with common CMOS and linear components, it indicates CMOS logic levels.
This low-pass circuit was found in the December 1990 issue of Radio Electronics magazine. The...
Found elsewhere in this section, but from other sources, this circuit is from a 1964 Electronic...
This circuit came out from the Linear Circuits Applications of Texas Instruments, based on the...