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  1. 15-11-2009 #10
    Ross77's Avatar
    Lives in Devon, United Kingdom.
    Ross77
    Last Activity: 09-03-2024 Has been a member for 9-10 years. Has a total post count of 759. Received thanks 27 times, giving thanks to others 52 times.
    Progress so far is three options.

    1. Basic . as per data sheet but with half step boost and ne555 controling the idle current reduction
    2.Ideal. as basic but with PIC controlling the idle current reduction and shunt reg to stop over voltage (not sure if I need to include the mosfet from the original as well?)
    3. Complete. as above but with output short-circuit protection. (not sure about that now as it is quite different fron the data sheet! posted earlier)

    Any thoughts, omissions or additions?
    Attached Thumbnails Attached Thumbnails Click image for larger version.  Name: Basic 4 amp.png  Views: 2134  Size: 32.9 KB  ID: 1165   Click image for larger version.  Name: Ideal 4 amp.png  Views: 1290  Size: 34.7 KB  ID: 1166   Click image for larger version.  Name: Complete 4 amp.png  Views: 2655  Size: 40.4 KB  ID: 1167  
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