I’m working on a Nixie Tube clock and I plan on having it switch off at certain times. I was originally just going to send an unusable code to the decoder to turn them off until I just realized the little neon lamps are directly wired to the +170v. I was thinking it would just be more efficient to switch off the power supply to take care of the nixies and the lamps at the same time. I am using this 555 timer power supply. It will be supplying about 17-20ma but I wasn’t sure if the power supply itself uses up more current. I was wondering what the proper way of switching off this PSU would be. I figured I could just cut the +12v but I wasn’t exactly sure what things I need to consider to decide how I do that.