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Rotating Solenoids

Discussion in 'Electronic Basics' started by Sravan, Dec 30, 2004.

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  1. Sravan

    Sravan Guest

    Hey guys, I picked up two rotating solenoids at a surplus store
    recently and I haven't the slightest clue on what voltage to use. I
    googled the Serial Numbers but these solenoids seem to not be very
    common. Should I just try random voltages , do I run the risk of
    damaging the solenoid? Also how can i get a power supply that has
    variable voltage?
  2. I would advise a slowly increasing voltage, starting from 0.
    The solenoid should operate at about 2/3 of its normal
    driving voltage. It may be rated only for momentary
    actuation, so you should used a pushbutton to keep
    from apply continuous current. As long as the device
    is not getting too hot to hold in your fingers, you are
    not likely to be hurting it.
    That is often called a lab supply. You buy or build it.
    If you have a variac, a bridge and a thumb-sized electrolytic
    capacitor of 24V rating, you could lash up something to
    apply a variable near-DC voltage to your solenoids, so
    long as you take care not to electrocute yourself or blow
    up the cap.
  3. John Fields

    John Fields Guest


    to see whether you can find specs for you solenoids there.

    Once you've decided on what range of current and voltage you want for
    the power supply you can try ebay or Google for it.
  4. I saw the picture and I'm not sure what they're for and I'm guessing instead
    of a plunger the shaft rotates? Please explain and their general
    applications and why?
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