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  1. Atom3892

    WEEE Directive

    I'm developing a product, and our customer is looking to sell the device in the EU, so it has to comply with the WEEE directive. It is a portable device using the a CR2032 type cell. The directive states it has to be removable, but no where does it state the limitations of how to remove it. I...
  2. Atom3892

    Nested Areas

    I'm using MathCAD 13 at work, and I would like to know if nested areas give problems. I create large sheets and they are flat during the design, when I go to add areas to the major topics I can't added areas to sub topics within the mayor topic. I can get around it by using areas around the...
  3. Atom3892

    Resettable Fuses

    Thank you for your help with this. Going to the mfgs website and reading through the application notes it states this: "DC valves have no inrush current. The amp rating can be determined by dividing the voltage into the DC watt rating."
  4. Atom3892

    Resettable Fuses

    I'm looking at the Bourns MF-R050 component. The datasheet for this particular 24Vdc air solenoid states a 3.2A current inrush for approximately 72ms. I forgot to mention the solenoid is being turned on and off by a low side n-ch MOSFET. Thanks, Adam...
  5. Atom3892

    Resettable Fuses

    I'm looking for some tips on sizing Resettable Fuses or PTCs. I'm looking through some datasheets and I see that they are dependant on the ambient temperature. I'm trying to protect a 24V off board supply line. The line connects to a DC Air Valve that draws 6W or 250mA steady state...

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