We are using an inductive coil transformer for a sensor. We excite the signal with a low frequency (1kHz-3kHz), and what we measure on the secondary indicates the proximity of a part.
Generating the signal and receiving the secondary signal has been completed, but one important feature we absolutely need to figure out is how to in circuit detect if either of the coils has been disconnected.
Any suggestions on what circuitry we could add for coil detection? DC offset does not effect the performance of the transformer sensor.