Sounds silly, doesn't it? I am an electronics guy from days past and I am helping my son with his science fair project. His project is to test different battery brands and see how long they last. I want to use this opportunity to introduce him to electronics and circuit building instead of just using flashlights or something else already built.
My plan is to build a simple circuit with a light bulb (or multiple), battery and switch. I figure with multiple light bulbs wired in parallel we will pull more current and drain the batteries faster. My questions are:
Thanks,
Mike G.
My plan is to build a simple circuit with a light bulb (or multiple), battery and switch. I figure with multiple light bulbs wired in parallel we will pull more current and drain the batteries faster. My questions are:
- How do I make sure I'm not pulling too much current from a battery? I don't want them to get to hot or maybe cause damage to the battery and/or possible harm to my son. We haven't decided on what size battery to use. At this point it doesn't matter. Where can I find out how much current each size battery can handle?
- Does anyone have any neat ideas on how to tell how long the battery lasted? Maybe an inexpensive analog timer we could use inline that would just stop counting up when the battery is drained? He is planning on using a watch or stopwatch to track it but I thought something like that would be neat.
- What am I not thinking about? I was an AT in the Navy so I had extensive training in electronics. Unfortunately, when you get to your squadron you swap parts instead of building circuits so my knowledge is mostly book based and I don't want to miss a step.
Thanks,
Mike G.