Elektor Team (9534)

1-07-1985 | 100 1k 10k 100k 1M 10M Os (0) 85455-1 To design a low noise amplifier, it does not suffice to choose a low noise opamp, because the componen...

1-07-1985 | It is sometimes useful, or even necessary, to use the same screen for more than one video source. Some simple video selectors used for this...

1-07-1985 | elektor july august 1985 A modem, such as the direct-coupled modem featured in the October 1984 issue of E/ektor, opens a whole new world to...

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...