More about design (647)

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...

1-02-2006 | A low-cost microcontroller drives a D/A converter, whose output signal is filtered using a bandpass in order to suppress alias frequencies....

1-01-2006 | This design for a Christmas tree lighting system employs ten red light emitting diodes (LEDs) instead of the usual lamps. The LEDs are power...

1-01-2006 | Particularly with extreme fieldstrength variations (due to fading etc.), an AGC guarantees fewer hiccups in the DRM (software) decoding proc...

1-12-2005 | This article shows a simple circuit for slow charging while preventing any risk of overloading the battery. The circuit consists of just fou...

1-12-2005 | When soldering SMDs (surface mount devices) onto a circuit board, it is often difficult to keep the tiny component correctly positioned. Wit...

1-12-2005 | Here’s how to turn a small stepper motor into an encoder. After all, a stepper motor has permanent magnets inducing voltages in the rotor co...

1-11-2005 | Programs for schematic capture, board designs (PCBs) and simulation are now indispensable tools for anyone serious about electronics design....