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    Can't find the transformer I need so need to build my own

    max charge current is .5C (140 amps) And I am building a 3 phase alternator to go with a DIY VAWT (2x3m) that should output about 180VAC at 60 rpm if I get my design right. Then transforming that to 3 x 48VAC then full bridge rectifying it to 52VDC. The turbine calculations...
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    Can't find the transformer I need so need to build my own

    please forgive me if not allowed to post a link https://www.aliexpress.com/item/1005002637835515.html In case the link gets deleted I'll also post the specs Product name: lithium iron phosphate cell（3.2V 280AH LIFEPO4) Typical capacity: 280Ah（25±2℃,fresh cell, 0.5C discharge） Minimum capacity...
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    Can't find the transformer I need so need to build my own

    Thank you for the elaboration, While I wait for the torodial transformer to arrive I'll see if I can find my old server gear if my wife has not disposed of it already and take a look at those PSU's And also thank you for the warnings regarding safety. I am for sure a newcomer to the field and...
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    Can't find the transformer I need so need to build my own

    Perhaps I missed it in your initial suggestion but I need a 3.6V power source at 140 amps. I'll admit that I am quite inexperienced so it's possible that you are suggesting that otherwise I'd like to focus on what I need.
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    Can't find the transformer I need so need to build my own

    can you please give a concrete example of this lead acid charger you are referring to?
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    Can't find the transformer I need so need to build my own

    thanks for the heads up. i guess it takes some trail and error then to get the correct DC output after reification. i'll look into toroidal transformers. have not learned about those yet. thanks for the suggestion wow, sweet. i just realize this is how a variac works. thanks again for setting...
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    Can't find the transformer I need so need to build my own

    Step 1. Does anyone know where I can find laminated soft boilerplate steel core to buy in Europe?. The bigger the better as I plan to wind the primary and secondary coil my self in various sizes for several use cases. I do have a 3d printer and can print with non conductive magnetic (iron...
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    For Sale: Various Test Equipment

    which of your oscilloscopes can you recommend for a total newb like me and how much would you want for it?
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    blew out a battery capacity tester. where to start?

    Wow, thanks for pointing that out. I'll send those back and get the correct component. might take some time to get here. and you're right, Experimenting can be done later
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    blew out a battery capacity tester. where to start?

    ahh no, that would fry things again as a fully charged battery bank is 58V. or is pushing the limit a bit by 3 volts something seasoned board builders do from time to time and get away with it?
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    blew out a battery capacity tester. where to start?

    can I post a link to what I bought or is that breaking forum rules? Anyway i'll list them for now 5Pcs--IRFZ44N--49A/55V 5Pcs--IRF510N--5.6A/100V 5Pcs--IRF520N--9.7A/100V 5Pcs--IRF530N--17A/100V 5Pcs--IRF540N--33A/100V 5Pcs--IRF640N--18A/200V 5Pcs--IRF740--10A/400V 5Pcs--IRF840--8A/500V...
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    blew out a battery capacity tester. where to start?

    if need be I can make a higher quality cropped version
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    blew out a battery capacity tester. where to start?

    here are some closer ups and I think I found trace evidence of the spark as there is some dark line where the mosfet used to be
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    blew out a battery capacity tester. where to start?

    My best guess is that that hole aids in heat dissipation. And yes I will continue testing components and replace those that are blown
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    blew out a battery capacity tester. where to start?

    yes I removed it, but one can desolder without knowledge of what the component is and how it works to be able to desolder it. and truth be told I did a sloppy job ;)
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    blew out a battery capacity tester. where to start?

    I must apologize but I really do not know. I am really new to electronics and everything related. Hopefully someone else knows
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    blew out a battery capacity tester. where to start?

    yeah never mind, I figured after a good night sleep that I'll have to replace all the components along the whole path from the battery source leads + and - and get an insane 48V dc immersible heater. That is something for when I am a bit less newb ;)
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    blew out a battery capacity tester. where to start?

    btw, this capactator tester can't handle anymore than 185 watts. If I get a bigger more badass mosfet can I then draw more power assuming it is only the mosfet that is blown? My battery pack theoretically can deliver 48V * 280A = 13.44Kw. I'd love to run a cap test at that power and see if the...
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    blew out a battery capacity tester. where to start?

    yeah the mosfet is blown. I watched a few videos on how to test a mosfet using a multimeter and now I know. i'll test the other 2 components tomorrow
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    blew out a battery capacity tester. where to start?

    that will save a tremendous amount of time and mutilation of the board ;)
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