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Hello Carl, I want to ask what the inductance of the TX and RX coils is? On the diagram, L1 is 1 m, I assume it is 1 mH, and at what frequency does the device operate? Has the board been tested and is it working? Thank you.
The inductances can be just about anything, I used TX = 1mH and RX = 4mH. The circuit is designed for 10kHz but that is not hard to change. Yes, I have a working circuit.
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