For the $5 I'd paid for it, that would have been cool. But alas, apart from being a useless scam, it's quite innocent. I tore mine apart, and inside is very little. Inside the plastic box is a circuit ...

There are a lot of weird scam tools out there. Soaring power bills have made the " power saver " scam devices popular, but the other day I came across another odd one called a "USB Phone Battery ...

A voltage-to-period converter takes a DC voltage and turns it into a pulse train whose period is proportional to the input Continue Reading... An update to an earlier DI that can "flip on and flop off ...