In the video embedded below, he shows off a homemade voltage detector circuit that he constructed using a trio of BC547 NPN transistors. The circuit is pretty simple though very useful all the same.

Non-contact voltage testers: tips and tricks As a home inspector, I use my non-contact voltage detector for a variety of things, and I'm careful to avoid these pitfalls during home inspections.

The non-contact voltage detector promotes lineworker safety. As a worldwide manufacturer of hot line tools and equipment, Hastings understands that every day has the potential to bring the unexpected ...

Hastings new voltage tester ensures safety for line workers by giving them the voltage information they need to make the right decisions on the job. This live tester, non-contact voltage detector uses ...

FLIR Systems has announced the availability of the Extech DV690, its first non-contact high voltage detector with a detection range of up to 69 kV.