I am trying to design multizone walk through metal detector using continuous wave technology. There are two panel on left and right of 2 meter height.
both panel having one transmitter and six receiver coils. I want to design variable frequency same in both transmitter panel. i used colpitts oscillator.
with 4 turns on left and 4 turns on right then in connected in series. but i cant get depth upto 750 mm. how to increase
both panel having one transmitter and six receiver coils. I want to design variable frequency same in both transmitter panel. i used colpitts oscillator.
with 4 turns on left and 4 turns on right then in connected in series. but i cant get depth upto 750 mm. how to increase