More about Design (644)

1-04-2006 | We received a surprising tip from an amateur radio operator for the easy removal of oxide and grime from aluminium, namely with the aid of b...

1-04-2006 | The switch-mode power supply chosen by the author for this article is built without the use of special-purpose ICs and so can be completely...

1-03-2006 | Are eight-bit processors something from the past or is it still possible to do something useful with them? Elektor Electronics went looking...

1-03-2006 | If a relay is driven by a transistor switching stage it is usual to connect a flywheel diode in parallel with the coil to short out the back...

1-03-2006 | When dealing with relays we distinguish between the pull-in voltage and the hold voltage. Depending on the type of device, the latter is fro...

1-03-2006 | Opamps seldom have an output current drive capability of greater than about 12 mA, and so they are not suitable for use in 20 mA current loo...

1-02-2006 | A few months while scrutinising a great design for a pulse-width modulated audio amplifier with a 2x100 W power rating and a very small encl...

1-02-2006 | This ultra-simple circuit will produce the familiar sound of sirens used by US police cars on emergency calls. A small lamp will also flash...

1-02-2006 | This design tip describes a simple equation to compose a desired resistance from two parallel connected resistors.The formula for parallel c...

1-02-2006 | Adding automatic gain control (AGC) to the Elektor Electronics DRM Receiver (March 2004) is a useful undertaking. The original receiver was...