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  1. AmpAnthony

    ninebot ES4 controller component identification /repair

    Hi all! I have problem with ninebot ES4 controller. Rear lights are very dim. So I traced the "L3" component, where seems to be big voltage drop. You can see it on next photo. Into L3 goes 4,9V but out comes only 2,9V. Current into rear light is 34mA. I have another two controllers which are...
  2. AmpAnthony

    Adding MOSFET-s to get more power

    Hi! I did research in this forum and others, seems it can be possible to add parallel MOSFET-s to controller, to increase current capability. I red that capacitances of parallel FET-s can be problem, they could not switch correctly and make short circuit (when + and - FET-s are on at the same...
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