Elektor Team (9510)

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| There are many potential applications nowadays to justify the use of a noise level meter -for instance, monitoring the sound output at dance...

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| Automatic battery chargers are not particularly cheap, however the pro-tection they afford against over-charging and possible battery damage...

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| n games of speed chess, where each player has only 5 or 10 minutes to complete all his moves, mechanical chess clocks leave something to be...

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| We seem to have become more aware, in recent years, of the colourful world in which we live. Colour television is now as common as black-and...

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| For all their undoubted advantages, batteries have one major disadvantage, they will eventually run out and almost always at the most inconv...

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| Gone are the days of the simple `ding-dong` doorbell (` Avon calling .. .`). Many modern house-holders seem to want doorbells that play anyt...

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| Since its appearance in 1972, the 1310 stereo decoder IC has been something of a standard device for FM receivers, and indeed has featured m...

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| Each Monday and Saturday evening, at the end of normal programmes, Radio 3 VHF transmitters broadcast a series of test tones which can be u...

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| The logic gate type MC 14530 (and its equivalents) is not used very much. This `dual, five-input majority gate` is, however, intriguing. Amo...

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| For some years now the. 3089 limiter/demodulator IC has been an industry standard for use in the IF stages of FM receivers. This IC has feat...