When working around mains voltages, it can be useful to know whether a given circuit is live or not. While this can be done by direct connection with a multimeter, non-contact methods are available ...

Discover how to build a simple wireless power transfer system at home using readily available components like enameled copper wire, an LED, a 2N2222A transistor, and a 9V battery. This step-by-step ...

If you’re looking for a neat DIY project this weekend, then this DIY 9V Battery USB charger could be a fun gadget to create. With only a few components, including a 9V battery, a female USB port from ...

Electronic enthusiasts looking for a way to control power to the next project from a 9 V battery may be interested in a small device called snapVCC. Available to purchase from the Crowd Supply website ...

Here is one simple circuit of a general-purpose white LED security light with Passive Infrared (PIR) Motion sensing mechanism. At the heart of the circuit is a PIR sensor module SB0061. SB0061 is a ...

With the help of this simple circuit you will be able to convert any voltage between 0.9V and 1.6V to a fixed 3V voltage therefore it is very useful when you need to power equipments that require 3 ...