Recent content by wolterh

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    Ngspice Capacitor Simulation problem

    I'm sorry I have been trying to reply this post for hours but my internet just keeps dying. Thanks for your answers, they are appreciated much! gnurf: I have not researched on how to add an internal resistance to a source but the resistor present in the circuit (between nodes n2 and GND) does...
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    Ngspice Capacitor Simulation problem

    I intend to use circuit simulation (namely ngspice because it runs on linux) to aid me through electric circuit studies. However, I recently encountered a problem in a circuit I was simulating: the plots were not logical - a capacitor was taking no time to reach its maximum voltage. At...
  3. W

    What is the correct formula for calculating the center distance between gears?

    Thanks for your input, I find it very complete. I read on later that I was using a lower number of teeth than the one recommended, and because of such, the application shifted some values in order to prevent mechanical failures. Unfortunately, I have to use these fewer teeth amounts because...
  4. W

    Whats the most common roller chain norm for bicycles?

    Well I was talking about the actual ISO / ANSI norm used in the design process, the pitch diameter I was able to measure and the radius too (I only need one sprocket). Anyway, thanks for your contribution, after tinkering for a while I found a norm that seemed bicycle worthy enough.
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    What is the correct formula for calculating the center distance between gears?

    Well needless to say I searched that in Google, even before registering to this forum. As you may find after looking into the results, there are different formulas and most of the websites listed read the formula I said logic dictated. I was looking for information that came from an experienced...
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    What is the correct formula for calculating the center distance between gears?

    Which is the correct formula to calculate the center distance between gears? I am designing a couple of spur gears in Autodesk Inventor and the application says that the center distance between them is 23.107 mm, but when I place them so far apart they seem to overlap. The gears have the...
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    Whats the most common roller chain norm for bicycles?

    I am designing a bike in Autodesk Inventor for a university project, and I am stuck with the sprockets. Inventor can create them fairly easily when you know the norm of the sprocket and the number of teeth it has, but I don't know the standard of the sprocket I have to design; I merely know that...
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