What happens when we discharge a capacitor through a SCR which we leave open?
The coil will make the current continue after the capacitor has completely discharged, causing the capacitor to recharge with the opposite voltage polarity. When the capacitor voltage matches the inductor voltage, it will start to discharge back through the inductor, but the current will be blocked by the SCR. The inductor current will continue through the flyback diode and resistor until the energy in the inductor is dissipated.