This circuit is from a Radio Electronics from February 1959. The circuit has a speaker output and good sensitivity. Power is supplied from a 9 V battery.
Found in RCA documentation from the 1970s, this circuit is intended for firing thyristors in inverter...
October 17, 2016 - Mouser Electronics, Inc. is now offering the Blue Gecko BGM113 Bluetooth®...
This is a circuit that we use very often in our projects, and it also appears in many technical...