0
0
Read Time:1 Minute, 31 Second What is Mobile Phone Detector? We are well familiar with mobile phone active detectors. The cell phone detectors are mostly…
0
0
Read Time:39 Second Introduction: This circuit is implemented using ULN2003 IC. IC ULN2003 made up of an array of seven Darlington transistor pairs. Components Required:…
1
0
Read Time:2 Minute, 35 Second Screaming Siren Circuit:- Siren may be a device that produces clap. they’re the means communication. Sirens will be seen in…