If you use a NiCd rechargeable battery you may ... charge for years. This circuit uses a 10F cap with a switching voltage regulator to increase the voltage from 2.3V to 9V. With a light load ...

The whole circuit is built on top of a battery clip so it can be run straight from the top of a standard 9 volt battery. It’s a circuit you’ll find all over the place, even built into many ...

tinkrLAB owner and founder Melissa Rabideau shows 6 News anchors Jorma Duran and Megan Viecelli how to make “squishy circuits.” All you need is a 9-Volt battery, alligator clips, Play-Doh and ...