When the Power Supply is at 1700 KHZ. The voltage across the inductor green is higher then the voltage across the capacitor blue. The circuit is more inductive because 1700 KHZ is above the tuned freq of 850 KHZ. See how inductor voltage green leads the current orange by 90 degrees. See how the capacitor voltage blue lags the current orange by 90 degrees. The current is like 500 uA, so it stops the higher frequencies.
