S sundar New Member Jun 27, 2010 #1 In the circuit attached what is the sensor coil (l1)and how can we make it. Attachments Cellular Phone calling Detector.doc 24.5 KB · Views: 227
JimB Super Moderator Most Helpful Member Jun 27, 2010 #2 Who knows? What does the original write-up say? Try 5 turns of 0.6mm hook-up wire wound into a 25mm diameter coil, stand it next to the cell phone and see what happens. Why do you need this? My cell phone which is "state of the ark" lights up its self on an incoming call, it also makes a noise. JimB Last edited: Jun 27, 2010
Who knows? What does the original write-up say? Try 5 turns of 0.6mm hook-up wire wound into a 25mm diameter coil, stand it next to the cell phone and see what happens. Why do you need this? My cell phone which is "state of the ark" lights up its self on an incoming call, it also makes a noise. JimB