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    15A Lead Acide Battery Charger!

    Just thought it worth mentioning that Lead-Acid rechargable batteries like a raw recharging supply. In other words, rectified but unsmoothed. The battery itself will have a smoothing effect on the supplied voltage but that is irrelevant. Look at the battery recharging circuitry in a vehicle and...
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    Resistor wattage

    Of course, you could achieve the same result by connecting two 160 Ohms resistors in parallel. Just in case it's not obvious to everyone..
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    led powered by a/c How To?

    It has nothing to do with the circuit operation. A polarised capacitor needs a net voltage applied in the correct polarity to maintain the electrolytic. This circuit is AC so a non-polarised capacitor is required.
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    Outout of a transformer!

    The line-to-line voltage of a three-phase system is √3 times the line to neutral voltage. This quote is taken directly from the following website. http://en.wikipedia.org/wiki/Three-phase_electric_power Another interesting website is...
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