The power supply is complete and working exactly as planned, thanks to Chris' skills.
The power supply is turned on and off by a relay, based on the voltage. This voltage is controlled by the red dial. This is designed so that we can set different voltages and avoid overcharging. The unit also features a master on/off switch and a way it can be turned off with a micro-controller.
These are the new projectiles - we will be testing the effectiveness of different coil/projectile size ratios.
Photos are thanks to Quentin Swager