Elektor Team (9531)

1-07-1985 | For some unknown reason, the Sinclair QL (and perhaps some other personal computers) provides positive, instead of the usual negative, field...

1-07-1985 | It is often desirable to know at a glance whether the mains voltage is at the low side; for instance, when you are about to work on a comput...

1-07-1985 | I Q noise generator Noise is normally defined as unwanted electrical signals spread over a rela- tively flat, wide frequency spectrum. In mo...

1-07-1985 | elektor July august 1985 it+044.1 11 brake lights monitor R Kambach The circuit described below monitors your car"s brake lights, and indica...

1-07-1985 | Although in electronics more NiCd than PbH2SO4batteries are used (or so we"re told), there is still a healthy demand for good chargers for t...

1-07-1985 | elektor july august 1985 0 00 mains interface This circuit is of use, for instance, when a computer is required to moni- tor a mains-operate...

1-07-1985 | This circuit is intended for use as a preventive device. We all know about accidents that occur through the accumulation of gas or of people...

1-07-1985 | Reminiscent of the accelerator pedal in a car, a swell pedal enables mu- sicians to alter the sound volume by foot, since they invariably ne...

1-07-1985 | Cilt72 spot frequency receiver Monitoring a number of frequencies in the short-wave band, such as the international shipping distress fre- q...

1-07-1985 | 27MHz I=1 3 rd overtone 00115 Many computer systems use one clock signal, from which all other timing signals are derived. The fre- quency o...