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  1. - 16th February 2007, 10:44 #32
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    Acetronics2
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    Wink Simplify, simplify !!!

    Quote Originally Posted by malc-c View Post
    Typically these loco's draw around 300mA - 600mA ( a quick test showed mine drawing 380mA with no coaches at full throttle )

    The schematic as it stands is attchaed
    Hi, Malc,

    R3 is no use at all here ... short it !!!

    ... but a 1N 540x cathode at the + 12v, anode on the V+ output could be rather useful ...

    Alain

    PS ... for Growling, may be you could try to " unsharpen" the PWM to somewhat with increased rise and fall time ... by inserting a filtering coil in series in the output line ( a LITTLE smoothing capacitor too ??? )
    Last edited by Acetronics2; - 16th February 2007 at 10:56.
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    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
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    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
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