The filter presented is from 1994 but can be implemented with a more modern equivalent. We found this setting in the National Semiconductor Linear Applications Handbook.
The circuit presented was found in a Motorola documentation from 19761, but it can be assembled with a...
This simple bargraph photometer appeared in the November 1987 issue of Radio Electronics magazine. The...
This circuit, found in a 1964 US documentation, consists of a selective amplifier that lets only...