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    nickds1 replied to the thread PCB Boards -- Simple Machinery.
    I'm most certainly not a motor control person, but as far as I can see a DOL is basically an NVR with added rather crude overload...
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    nickds1 replied to the thread PCB Boards -- Simple Machinery.
    Thanks for that. Looking at the wiring diagram (SLD) and the PCB a bit more, the PCB, 4017 and associated pin header may be to do with...
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    nickds1 reacted to JohnerH's post in the thread PCB Boards -- Simple Machinery with Like Like.
    @deema, No else but me and my wife will be using this machine and quite frankly it's a stop gap for me to board up the garage walls with...
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    nickds1 replied to the thread PCB Boards -- Simple Machinery.
    It's unlikely that the board itself will spontaneously experience RUD, so there will have had to have been (an) external event(s). It's...
    • PXL_20230515_151138680 (1).jpg
    • PXL_20230310_094811933_copy_756x1008 (1).jpg
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    nickds1 replied to the thread PCB Boards -- Simple Machinery.
    The TO220 cased device is a TYN816 which is a 16A, 800V SCR. The CMOS device is an HCF4017BE decade counter. The LV for the CMOS can be...
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    nickds1 replied to the thread PCB Boards -- Simple Machinery.
    Being fair, that's a 3-phase controller and unlikely to be used in a cordless drill. Single phase is considerably simpler, though it may...
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