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fixed auto-transformers

Discussion in 'General Electronics Discussion' started by benmales, Jun 17, 2010.

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  1. benmales


    Jun 17, 2010
    Hello all

    I am currently trying to build a good quality (and very loud) personal alarm. I am opting for a system based around 556 CMOS driving a piezo. I have taken apart numerous examples of personal alarm and all use a small fixed auto-transformer to feed the piezo. I now have a few salvaged A-Ts but I'd like to find a supplier so I can buy more, Does any one know where I can find something suitable. Farnell, digikey and RS dont have anything that small!

    Thanks for your time

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