In Part 1 of the Electronics for Kids series, we looked at LEDs; in Part 2, we explored capacitors; and in Part 3, we took an in-depth look at electrical measurements. In this article, we will focus ...

I have a main circuit board in a machine that over a year or two eventually drains a 3.6v lithium AA size down to 1.4V. This battery has a wire soldered at each end which is then soldered to two ...