why do TV remotes get “weak” when the batteries start running low?

Question

I’d instinctively expect it to be more of a binary thing: they work, then when the batteries get to a certain level they completely stop working.

Instead you get this in between phase when the batteries start getting low, where you have to get closer to the TV for them to work. Why?

In: 5

Answer 1

You know how a flashlight gets dimmer when the batteries get weak? It’s identical but it’s an infrared light sending the signal.