80-90V to keep it running are above the "low voltage" guidelines and their ~500mA is enough to kill. Presumably the driver circuit would notice that no current

80-90V to keep it running are above the "low voltage" guidelines and their ~500mA is enough to kill. Presumably the driver circuit would notice that no current is flowing from a ruined bulb, try the sparker a few times to restart the arc, then give up and turn off the 90V drive. But it might be cheaper to build…