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My first resultas with PI tecnology
I used the IRF 640 for pulser, at 100Hz and 50uS of with, a 8.2 inch coils with 28 turns of 20 awg wire.
LM 709 conect as describe Sandbank and 4016P like swich to the integrator that is compose for a LM 741 idem to Sandbank Integrator. Few, i used a not inverter amplifier (another LM 741) to amplif the signal and drive the VCO componse for a NE 555.
The detector is not adjusted complety, now is detecting a 12.5 g silver coin at 15 cm, and a coke can about 45-50 cm.
Some body can say me because my detector not dectect Aluminium good?????
I hope that i extend this performance making aditionals probe and adjust
I used the IRF 640 for pulser, at 100Hz and 50uS of with, a 8.2 inch coils with 28 turns of 20 awg wire.
LM 709 conect as describe Sandbank and 4016P like swich to the integrator that is compose for a LM 741 idem to Sandbank Integrator. Few, i used a not inverter amplifier (another LM 741) to amplif the signal and drive the VCO componse for a NE 555.
The detector is not adjusted complety, now is detecting a 12.5 g silver coin at 15 cm, and a coke can about 45-50 cm.
Some body can say me because my detector not dectect Aluminium good?????
I hope that i extend this performance making aditionals probe and adjust