Elektor Team (9517)

1-07-1985 | I N VLF converter Strictly speaking, the VLF (very low frequency) band stretches from 3 kHz to 30 kHz, and the LF (low frequency) band, ofte...

1-07-1985 | 11090flow power supply sequencing for opamps Most designers know that many prob- lems may arise between the paper design and the practical r...

1-07-1985 | elektor july/august 1985 11g 1111104111041111 If you are one of the many who fre- quently forget to switch off their digital multimeter, thi...

1-07-1985 | E ig mains wiring locator The accompanying circuit shows a 9V simple means of locating current- carrying conductors. The detector coil is a...

1-07-1985 | 7-60 g direct reading digitizer The computer to which this digitizer is coupled reads a 3-digit number that is a direct representation of th...

1-07-1985 | discomixer This mixer is a typical example of the way modern components can, and do, simplify the realization of good quality audio circuits...

1-07-1985 | elektor july/august 1985 There are many ways of protecting loudspeakers against the switch-on "plop": many of these rely on a clamp circuit...

1-07-1985 | The opto-coupler in the normal com- mon emitter circuit at the output of a phototransistor is invariably too slow for use in data communicat...

1-07-1985 | A practically proven small circuit that is very popular with many model fliers, as it enables them to verify that their remote control trans...

1-07-1985 | The active rectifier proposed here is based on the property of an oper- ational amplifier that its output cannot become negative if its powe...