In this question How can I drive an LC tank circuit to get a nice and clean sine wave? I learned to get clean oscillation waves of a tank circuit (Tx) and consequently its reception through antiphase receiving coil (Rx). The Tx and Rx arrangement is shown here.
How to balance Rx coils to completely cancel each other?
Feed back after suggestions:
@Andy advised to use balun and suggested the turn ratios too. I constructed and used in two ways.
- Primary center tapped left open
- Primary center tapped attached to ground of secondary.
I got major cancellation effect when I adjusted position of both Rx coils. Thus the Rx signal reduced from 10+ mV to around 1.5mV.
I am planning to re-construct the coil system with precise distancing and grooves on pipe surface to ensure straight circular loops. Any further suggestions are welcomed.