All items tagged with Circuits & Circuit Design and Test & Measurement (73)

1-07-2014 | This simple six-component circuit flashes an LED to let you know that a fuse in some AC powered device has blown. Its operating principle i...

1-10-2012 | It is often necessary to deal with tiny currents in the picoamp to microamp range when making measurements in ionisation chambers and other...

1-02-2009 | Curve tracers have been a staple in Elektor since 1979. This practical project from 2009 measures and records characteristic curves of NPN/P...