Using a common crystal diode and a 741, this circuit can be used to detect microwaves. The circuit is from old documentation and the switch selects the gains.
Using Linear Technology's LTC4252-1, this circuit was found in a 2005 manual. The circuit makes use of...
The mark-space relationship or active cycle of this oscillator can be programmed by the values of...
This simple alarm with integrated CMOS sounds a piezoelectric transducer when the sensor circuit...