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Hi
Maybe somebody can inform me the kind of coils arrangement of this detector sensitive for small items. Runs at 83 - 84 Khz and is very stable. The housing coil have 15 cm and a center hole of 2.5 with the words "eye target". Is an I/B machine controlled by an only 5k potentiometer (sensibility) and give a sound like BFO. Have 4 NPN, 3 PNP and a J112 fet.
Transmiter coil is 4 ohm and receiver 4.5 ohms.
Thanks for the inputs.
Esteban
Maybe somebody can inform me the kind of coils arrangement of this detector sensitive for small items. Runs at 83 - 84 Khz and is very stable. The housing coil have 15 cm and a center hole of 2.5 with the words "eye target". Is an I/B machine controlled by an only 5k potentiometer (sensibility) and give a sound like BFO. Have 4 NPN, 3 PNP and a J112 fet.
Transmiter coil is 4 ohm and receiver 4.5 ohms.
Thanks for the inputs.
Esteban