Using an operational amplifier, this circuit from a 90s Popular Electronics, is characterized by its high sensitivity. R5 can be added to control the gain.
June 2017 - Mouser Electronics already has Maxim's new nanoPower MAX4000 comparators in stock with an...
We found this circuit in an old documentation for hams. In it we have the way to use a varicap to...
June 2016 - Mouser Electronics already has in stock the new LM5165 from Texas Instruments that...