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  1. kje

    Meanwell clone- AD488.3-400W power supply mods

    Yes, that make sense. No need to excuse, this is a great learning process for me. ☺ I ordered a 1000uF 63V cap and will try again when it arrive. Thank you for your assistance.
  2. kje

    Meanwell clone- AD488.3-400W power supply mods

    I soldered a 10k trimmer pot to R40 but when I powered the power supply I blowed one of the capacitors as you can see on the picture below. https://www.dropbox.com/s/rq765ytyt17sjrv/20160222_200153.jpg?dl=0 https://www.dropbox.com/s/ib2tyxoomksoz8i/20160222_200016.jpg?dl=0
  3. kje

    Meanwell clone- AD488.3-400W power supply mods

    Nice. Can I do this with a 10k trimmer pot?
  4. kje

    Meanwell clone- AD488.3-400W power supply mods

    Here is a video of the circuit: https://www.dropbox.com/s/ieesyv8h3xree0k/20160211_141817_001.mp4?dl=0 And here is a picture: https://www.dropbox.com/s/45zj8devjzcydvb/20160219_160959.jpg?dl=0 And a close up picture: https://www.dropbox.com/s/1lgmppbfsho8jmo/20160219_161200.jpg?dl=0 Does this...
  5. kje

    Meanwell clone- AD488.3-400W power supply mods

    Great. I'm looking forward to it. :)
  6. kje

    Meanwell clone- AD488.3-400W power supply mods

    I placed a trimmer pot across the R35 and tried to charge my 48V battery but the pot doesnt do anything. It has to be said that the current was starting at about 5A and went downward. The voltage was just 51.6V at maximum so I need to get the voltage up. Is it because the low voltage the trimmer...
  7. kje

    Meanwell clone- AD488.3-400W power supply mods

    Thanks. I'll give it a try.
  8. kje

    Meanwell clone- AD488.3-400W power supply mods

    Could you see anything on the video or picture? ☺
  9. kje

    Meanwell clone- AD488.3-400W power supply mods

    Here is a video of the circuit: https://www.dropbox.com/s/ieesyv8h3xree0k/20160211_141817_001.mp4?dl=0 Are you able to trace the circuit back to the shunt on this video?
  10. kje

    Meanwell clone- AD488.3-400W power supply mods

    Are you able to trace the circuit back to the shunt on this picture?
  11. kje

    Meanwell clone- AD488.3-400W power supply mods

    The number of the 16 pin chip is: 15407YH TL494CN The supply model is 48V 7.5A 360W Bought it here: http://www.ebay.com/itm/311001005100?_trksid=p2057872.m2749.l2649&var=610293600576&ssPageName=STRK%3AMEBIDX%3AIT Is it possible to reduce the current with your method on this supply?
  12. kje

    Meanwell clone- AD488.3-400W power supply mods

    Here is pictures of both sides of the board. Can you trace it out for me? Side 1: Side 2:
  13. kje

    Meanwell clone- AD488.3-400W power supply mods

    I've taken additional picture (look at the attachment under) of underside of circuit board so R35 function might, possibly, have a chance of being determined? Does R35 in this power supply controls amp output?
  14. kje

    Meanwell clone- AD488.3-400W power supply mods

    Thank you. How did you find out where to place the 10k trimmer pot so the current limit can be adjusted? I wonder if I can do the same on my 350w power supply...
  15. kje

    48V 18650 configuration

    I've taken additional picture of underside of circuit board so R35 function might, possibly, have a chance of being determined? Does R35 in this power supply controls amp output?
  16. kje

    48V 18650 configuration

    Is R35 reducing the amps on this board?
  17. kje

    48V 18650 configuration

    I have this 7.5A 360W 48V power supply. I will charge my 13s pack with 54.6V. Can I solder in a resistor in R35? A 220 ohm resistor will be 54.6V / 220 ohm = 0.248 A? Sounds like I should have a smaller resistor like 10 ohm? 54.6V / 10 ohm = 5.46A? And what wattage should it be? (The...
  18. kje

    Meanwell clone- AD488.3-400W power supply mods

    Can I use this to limit the current? ☺ http://www.ebay.com/itm/251877265728?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
  19. kje

    MeanWell Mods - S-150-48 +Mega-Mod

    Can I solder inn this 5w 22ohm resistor in series between my 7.5A 360W 48V power supply and the battery pack? Will it reduce the amps while charging? http://www.ebay.com/itm/400552119082?redirect=mobile Or this 10k trim pot...
  20. kje

    End Voltage on A123 batteries

    What is the max end voltage on A123 batteries? Should I charge them to 3.6V each cell? Or higher?
  21. kje

    DIY Lithium Jump Starter

    What is the max end voltage on A123? 3.6V for each cell?
  22. kje

    48V 18650 configuration

    Shouldn't the power supply limit the current by itself?
  23. kje

    MeanWell Mods - S-150-48 +Mega-Mod

    I bought this 7.5A 360W 48V power supply. (As my last 3A 150W 48V fried) http://www.ebay.com/itm/311001005100?_trksid=p2057872.m2749.l2649&var=610293600576&ssPageName=STRK%3AMEBIDX%3AIT Can I Remove R33 & R38 and replace with a .5k (500ohm - 500B) pot? Will this allow ~0A to 5.4A adjustment?
  24. kje

    MeanWell Mods - S-150-48 +Mega-Mod

    I don't understand how you restrict amps? Do you remove the R33 resistor and solder in a bigger resistor? Or do you solder a potentiometer like this...
  25. kje

    Homemade Battery Packs

    I used 16awg wires. How can I limit/adjust the amps?
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