Here's an odd one for y'all. I have a Booz barometer. This is the old bartop game where you attempt to move a metal loop over a metal rod without making contact with the rod. It is powered by a 6v lantern battery. The problem with the game is that, when the battery is new, if you just look at the rod funny, the buzzer goes, the coil fires and the game ends. On the other hand, when the battery is towards the end of its life, you can pretty well keep it on the rod without the game ending. Sparks fly when you contact the rod, the buzzer sounds, albeit rather sickly, but the coil won't fire. Obviously, between those two scenarios, the game work well. However, that 'sweet spot' doesn't last long. Seems like it stays at the too sensitive state for a long time (lots of plays), and once it starts to deteriorate it goes fast. So, I thought I could wire a pot into the circuit to dial in the sensitivity while it is 'too hot'. My question is what type of potentiometer should I use? Or is there another answer? (Converting it to plug in is not an option)
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