Using an RCA integrated circuit, this instrumentation amplifier was found in a November 1970 Radio Electronics magazine. The instrument has a full scale of 100 uA.
This alarm circuit was found in April 1975 Radio Electronics magazine. The circuit uses a 12 V...
This circuit was found in the July 1991 issue of Radio Electronics magazine. It converts a binary...
This transistor radio was manufactured in the 60s and has 6 transistors from that time. The...