This circuit is part of an article published in the March 1990 issue of Radio Electronics magazine. The sensor consists of a grid-shaped electrode shown in the figure.
This 80's circuit uses an integrated amplifier of the era, but nothing prevents it from being...
This power supply was found in a RCA publication from the 1970s. The circuit uses transistors from that...
Maxim MAXREFDES67 Universal Analog Input Micro PLC is ideal in factory automation because of its...