Recent content by AdamK9

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    Electromagentic brake for AC motor

    the wire gauge can be calculated by the current that will be running through the wire, and the number of turns you need can be calculated if you know the current, gauge, and length of the coil. The length of wire you need can be calculated by Length=(l/G)*(∑((2*pi)^N)*(r+(G*N))) where l=the...
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    Best way to produce 1 million volts dc

    If you did that then you would be exposing every transformer to 1MV which I am quite certain their insulation can't handle You could make a large tesla coil with a large homemade diode, or many seriesed diodes on the secondary
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    Undergrad What Does Constant Phase Difference Mean in Stationary Waves?

    In order to create a standing, or stationary wave you have to cause an oscillation at a constant frequency at a multiple of the resonant frequency of the medium, this constant frequency is how the stationary wave is created. if a wave is sent down a string, then another sent down the other side...
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    Current limiting before voltage regulator

    I am making a power supply and am using a lm338k to regulate a variable voltage from 2 to 30 volts. I also want to put in current limiting, preferably variable, up to 5 amps since that's what the lm338k is rated at. Since the resistances in the current limiting circuit need to vary when the...
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    Rectified AC through an AC transformer

    Thanks for all your help. I am wanting to rectify it ahead of time because i want to step up the voltage to about 20000v with a power transformer and since high voltage diodes tend to be more expensive than low voltage ones i was wondering if it was feasible to rectify ahead of time, but it...
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    Electronic device turned on in presence of tesla coil

    I had a small, about 1 foot secondary tall tesla coil with about 3 inch leaders coming off the toroid, and when i turned it on, I had an LED bike blinker light that would turn on when I would turn on the tesla coil. The blinker was about a foot away from the coil. I was wondering if anyone...
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    Converting Pulsating Current to DC

    if you need a steady dc signal then put a capacitor across the positive and negative, then run it through a voltage regulator. if you want to be able to vary the voltage then you could try an lm317, I believe you can draw 1 or two amps from it. If you want 12 volts lm7812 and for 5 volts...
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    Rectified AC through an AC transformer

    Like the title says, I am wondering if it is possible to rectify an AC signal and run it through an AC transformer. The rise and fall in voltage still exists so it should work, or are AC transformers made specifically for an AC signal and other information needs to be taken into account?