More about Circuits & Circuit Design (393)

1-07-2014 | This handy transistor tester allows you to quickly test the function of an NPN/PNP transistor, JFET or (V)MOSFET and identify the correct le...

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...

1-11-2013 | The circuit described here has all the features required for conducting various experiments and tests on a CAN bus. In addition there is the...

1-05-2013 | After the flood of theory, design considerations and software descriptions in the first two installments we are ready to tackle practical ma...

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...

1-10-2012 | When your attention is occupied elsewhere, it can be hard to watch a display. Wouldn’t it would be a great idea if you could keep track of a...

1-07-2012 | Taking apart a solar-powered lamp revealed a single-transistor voltage converter circuit that allowed an LED to be driven from a 1.2-V cell....

1-09-2011 | When riding a bike, it's better to be safe than sorry. This innovative project involves mounting a red warning flasher on the rear of a bicy...

1-01-2010 | Herwe use a green glowing valve as a CPU activity meter. Power and control are both provided by the USB port. A simpler variant on the circu...

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...