This interesting sensor for RF signals was found in an article in the June 1989 Radio Electronics magazine. It is a field strength meter with an LED bargraph indicator.
June 2016 - Mouser already have to deliver the new analog-to-digital converters SAR ADSxx53 of...
September 2016 - It can be purchased from Mouser Electronics the new rectification controllers...
This polarity inverter circuit for voltages down to about -12 V was found in the December 1992...