Elektor Team (9517)

1-12-1975 | The circuit described here provides control of the `automatic barrier` type of level crossing (or indeed of the old-fashioned gate type)....

1-12-1975 | When thyristors are carrying A.C., they will turn off at every zero- crossing - which can be a nuisance. When carrying D.C., however, they...

1-12-1975 | It is possible to display more than one trace on the screen of a single-beam `scqpe, using a fast electronic switch. This design will i...

1-12-1975 | In the new Quad 100 Watt amplifier design, a special negative feedback arrangement enables the output transistors to be zero biased wi...

1-12-1975 | With reference to the column that appeared under this heading in elektor no. 3 (April 1975), we should like to amplify the following poin...

1-12-1975 | As the days were once again growing shorter, a designer had a nostalgic dream - about the good old days with the whole family...

1-12-1975 | Over five years have elapsed since the CD-4 system was announced as a means of achieving quadra- phony from a disc record. The worldwide...

1-12-1975 | As most quadro-enthusiasts will know, an integrated demodulator for CD-4 has been available in the retail trade for several months now...

1-12-1975 | The circuit shows a transistorised universal thyristor, or TUT. This TUT circuit can be useful, for instance, as a mains failure indicator f...

1-12-1975 | This candle is a simple electronic toy. It can also be used for conjuring tricks. The circuit is designed around an incan- descen...