Luckily, [Paul] sent in a great tutorial on building a LiPo charger that works over USB. The board [Paul] came up with is incredibly small – just barely larger than the USB plug itself.

There are many, but for this post, I’m going to take you inside a Dickson charge pump. This is Circuit VR because not only are we going to discuss the circuit, we’ll look at an LT Spice ...

One coulomb of charge is equivalent to 6,250,000,000,000,000,000 electrons. In a closed circuit that includes a source of potential difference (voltage) there will be a current flowing around the ...