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Hi guys,
I am currently developing my own IB detector. When I examined some schematics and patents of IB machines I found an interesting configuration of the RX coil in some Garrett patents. The RX coil is connected to a transformer, probably to amplify the received signal. Have anyone experimented with such a circuit and know more details of the transformer parameters. Does it help at all? The patents are from the late 80s but I suppose analog circuitry hasn't changed a lot.
http://www.geotech1.com/pages/metdet.../US4700139.pdf
I am currently developing my own IB detector. When I examined some schematics and patents of IB machines I found an interesting configuration of the RX coil in some Garrett patents. The RX coil is connected to a transformer, probably to amplify the received signal. Have anyone experimented with such a circuit and know more details of the transformer parameters. Does it help at all? The patents are from the late 80s but I suppose analog circuitry hasn't changed a lot.
http://www.geotech1.com/pages/metdet.../US4700139.pdf