Recent content by Adder_Noir

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    Dealing with burn out in undergrad

    There was a time when I could never have hoped to have replied to such a simple sweeping and condemning statement that had society on its side and me all on my own against it. But that was a long time ago, I'm a lot older now, graduated 12 years ago in engineering from a major university, have...
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    Undergrad Orientating objects to align with a specific axis

    Hi this resource: http://web.archive.org/web/20041029003853/http:/www.j3d.org/matrix_faq/matrfaq_latest.html" Question 39 I believe firmly answers the question ;o)
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    Undergrad Orientating objects to align with a specific axis

    Hi!, I'm well into the world of computer graphics. Love to say it was great but well, it isn't. I would like to know how I can take any object and have it orientate so its centre aligns perfectly with any arbitrary axis. Think of a cylinder at the origin pointing down the x-axis. Well I...
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    Switching power circuits with small control circuits

    More good stuff guys thanks I'll reply in more detail tomorrow it's 1200am GMT here, cheers!
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    Switching power circuits with small control circuits

    Hi! Oh my that's some seriously good information alright! I think I will indeed swop my design for the one shown in that link, but I'll wire an inductor across the motor in parallel and include a drain diode for when the inductor switches off and see if that helps it out. I'll prob include a...
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    I could use some help on this small circuit design - will it work?

    Nice points berkeman cheers that may well come in handy! This discussion is continued on the latest theoretical area it has wandered into https://www.physicsforums.com/showthread.php?t=374993"
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    Switching power circuits with small control circuits

    Hi this is it all done. Pretty sure I've missed a coupling capacitor off the input side but not to worry I'll add it later. http://img213.imageshack.us/img213/7808/motorcontcircuitscan100.jpg The motor is drawn rather simplified as if it were just direct connected to all this control...
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    Switching power circuits with small control circuits

    You are my hero! Nice spot pal cheers! I'm looking at the ID is ir rated to 202A and the Vds is rated to 40V. I see the PD rating is around 200W though which sounds quite low for this transistor. Is this PD rating meaning the power exhibited by the gate input to the source or is it the total...
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    Switching power circuits with small control circuits

    Your ideas are sound. Thank you very much for replying. I espcially like the concept of making use of two transistors. I think I will do this anyway as I do suspect some of the currents drawn might fly a bit close to the wire. I'll produce a drawing later of the final design, I am most...
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    Switching power circuits with small control circuits

    Hi this looks like a good link, it specifies most of the stuff I needed to know right at the end. Might help someone else passing through this thread in the future: http://en.wikipedia.org/wiki/Power_MOSFET" *ID means Drain Current I believe. Which is basically the amount of current...
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    Switching power circuits with small control circuits

    I found this one. Is it any good? I see the Voltage rating looks high and so does the current but the power rating is only around 208 watts is that enough? Does this mean I have to design my circuit so not more than 208 watts is spent in the transistor...
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    Switching power circuits with small control circuits

    Sounds great, cheers!
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    Switching power circuits with small control circuits

    Hi, I would imagine this is a quite a common concept in electronics. I am currently trying to make a small circuit which will switch a voltage supply to a small 12V motor on and off. I've had some help on here which has enabled me to pin down the type of circuit I need to get the output I...
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    I could use some help on this small circuit design - will it work?

    This is a brilliant link: http://www.doctronics.co.uk/555.htm"
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    I could use some help on this small circuit design - will it work?

    More good stuff, thank you berkeman :wink: