Elektor Team (9517)

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| 16 input channel selector sixteen This is the third method of controlling the channel multiplexer described in this issue. The first describ...

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| 7-80 — elektor july/august 1981 K. Hense post office letter scales voltage regulator, IC1. For this reason, the regis- tered tariffs are r...

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| 85 mains LED The very long life span of LEDs make them emi- Howev r, theira nently suitable for on/off indicatnors. ctedesince use on mains...

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| low no resonant oscillator lusted for maximum outp It may not be very widely known that overtone oscillators can operate in the parallel res...

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| of the most coupling a van lights One caravan connector tester the connecting pins in the socket operate as and when they should. Simply plu...

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| 744 — elektor july/august 1981 universal digital meter This digital meter is a great improvement on the pre- vious design (January 1979) t...

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| high power motor controller This high power motor regulator features the Ferranti ZN 419CN and is capable of controlling electric motors in...

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| 90 ring counter using timers The 558 quad timer hides four independent timers that are able to generate pulses with a pulsewidth ranging fro...

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| 7-88 — elektor july/august 1981 91 crystal tuning fork The musician, who does not possess "perfect pitch", will no doubt occasionly have t...

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| 92 dynamic RAM power supply It is often a common wish to extend the memory range of a microprocessor system with the aid of - economically p...