The Bug detector is a highly sensitive transmitter detector designed to detect transmitters with an output power as low as 10mW, even from a distance of approximately 15 feet. This […]
Current Detector Circuit on PCB Tracks
This High-Gain Current Sensor circuit can be deployed to detect the availability of low-level current flowing though a PCB’s copper lines or traces. Two straight-pin probes are utilized to form […]
Simple Knock Detector Circuit
The final circuit we will see deploys the ceramic sensor that is readily available. If you have experienced the difficult to detect the source of a low noise knock or […]
Sound Operated Switch Circuit
Sound triggered switches are employed in several applications, a few common illustrations being voice controlled tape recorders, baby alarms, burglar alarm systems, and VOX (voice managed switching) techniques of radio […]
Stress Level Detector Circuit
This stress level Detector Circuit can be used as a Bio feedback control circuit for knowing the emotional status of a human brain and whether the person is suffering from […]
Zero Crossing Detector Circuit
Many complex circuits and integrated circuits contain zero crossing detectors, but we will deal only with the detector here. The detector produces a pulse each time the mains voltage goes […]