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    Sequence counter

    Hello everyone, I'm having difficulty trying to design a sequenced penalty counter which uses LED's per penalty and keeps the proceeding LED on. I'm not sure whether its me, or MultiSim which i'm using to create it that is the problem. Please remember i'm a student
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    Simple 1 hertz clock

    A very simple question to many of you out there i imagine. Could someone give me the resistor and capacitor values for an astable 555  with a frequency of 1 hertz? Thanks a lot Steve
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    +- counter to 30

    Hello everyone, I'm in great need of a counter that will count up and down, and will count up to 30.. Does anyone know how to put two +- counters together to make a counter that will count up to 30, and down ? Thank you for any help Steve
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    Clock/timer

    How can i make a simple circuit, to create a clock, which counts down from 3 minutes, 2 minutes or 1 minutes. ( requiring adjustable settings ) The clock is to be fed into three seven segment displays. Can anyone help ? I'm thinking of something along the lines of a simple D type formation...
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    7 segment displays

    I'm designing a scoreboard for a mates karate competitions, and i need some really quite big seven segment displays. Can anyone tell me where i can get these and how much they'll cost.. I looked on RS components, but there doesn't seem anything really big enough on there.. i need them to be...
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    Wind power generator project

    Hello everyone, I'm interested in doing a project which uses renewable energy. Basically i want to use Wind power to Charge up a battery, which then, i can use for my computer during the evenings for instance. Has anybody here tried generating energy from wind? is it possible? Where could i get...
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    Speakers

    I'm a bit of a novice really when it comes to electronics, but i'm making the 18W amplifier from this site. Can anyone tell me where i'd be able to get my hands on some decent 8 ohm speakers ? Thanks a lot
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