More about Circuits & Circuit Design (368)

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...

1-05-2007 | The circuit described in this article is incredibly sensitive to changes in the magnetic field. It can be used to detect earthquakes, but it...

1-07-1997 | The circuit in the diagram converts a sinusoidal alternating voltage into a direct voltage equal to the r.m.s. value of the input voltage...

1-07-1994 | This is a no-frills audio power amplifier based on inexpensive transistors. It is short-circuit protected and has a maximum power output...