This receiver circuit was found in documentation from 1924. The circuit uses two batteries, the high voltage one being 90 V.
Found in Motorola documentation from the 1980s, this circuit employs an integrated device from...
This circuit, from a 2001 documentation, appears elsewhere on this site. Its purpose is to obtain a...
This 9-bit DAC circuit was found in the RCA CMOS integrated circuits manual of the 1970s. The...