I am wondering what would happen when we discharge a capacitor, by using a SCR, through a coil and we leave a current applied to the gate of the SCR. The coil should generate a ‘reverse’ current right? Can this current go through the still open SCR or is this not possible because the SCR consists of diodes, which only let current in from one direction? (We have placed a flyback-diode in series with a resistor in parallel of the coil, if this would make a difference.)
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.