Elektor Team (9517)

1-07-1985 | Not so long ago, when semiconduc- tors were still quite expensive, it paid to make a transistor serve more than one function. Although this...

1-07-1985 | elektor july/august 1985 Even the best car alarm is useless if you forget to set it upon leaving your car, whence this circuit. The relay ha...

1-07-1985 | 1110011111041111 A novel use of solar cells makes pos- itioning your car in the garage rather easier than old tyres, a mirror, or a chalk ma...

1-07-1985 | 8-02 II twin keyboard for Apple II The keyboard supplied with com- puters is for many applications not the ne plus ultra it is claimed to be...

1-07-1985 | Circuits for generating electronic music are usually controlled by key switches. Not only do keyboards offer the simplest technical solution...

1-07-1985 | Nobody pays much attention to auto- matically opening and closing sliding doors nowadays. In view of the com- plex mechanics involved, not t...

1-07-1985 | The BBC and Electron computers pro- duced by Acorn have a joystick port to which only analogue joysticks can be connected. For many purposes...

1-07-1985 | In the 1.2 GHz input stage (February 1985) for the microprocessor- controlled frequency counter, we used an SB8755 prescaler in the IC7pos-...

1-06-1985 | A tone burst is a testfrequentlY used 10 audio engineering, partieulartyin loydsPea4er, measurements. It consists of -0 train of sine waves...

1-06-1985 | infra-red movement detector elektor June 1985 The detector described in this article reacts to fast temperature variations caused by the mov...