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Recent content by treemon

  1. T

    Need advice for my toroidal core dimensions

    CGRO would mean - Cold rolled grain oriented steel. I have completed my transformer work, everything looks good, but this transformer is so bulky that it distorted sinewave form to unacceptable levels, maybe its a gate driver or some other glitch.. I have no idea For time beings its doing rest...
  2. T

    Need advice for my toroidal core dimensions

    That sounds great.. :p
  3. T

    Need advice for my toroidal core dimensions

    Superb... I expect that maximum load it will encounter is going to be like 2500w Yes i was thinking about this, I have a working inverter but its 12v based and i guess many things need to be changed, can create big mess. I know pcb design is a hard work for newbie like me and bizzare things...
  4. T

    Need advice for my toroidal core dimensions

    Hi warpspeed, I have completed primary windings, although wire gauge is not that big 16sqmm ( but with a huge strand count), no welding wire from local market were flexible. I tested several times (using different meters), and the idle power consumption with egs002 installled, is coming about...
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    Need advice for my toroidal core dimensions

    Yes, but its a reality for me...
  6. T

    Need advice for my toroidal core dimensions

    Thanks, without your guidance it wasnt feasible... I will keep the transformer outside pcb housing in open air... Btw in a different note, I have frequently experienced, whenever I indulge in deep electronics craft work, I lose some weight and I my forearms become lean, this happens with...
  7. T

    Need advice for my toroidal core dimensions

    Okay, I tried that circles calculator, its very good, without this one cannot do just by perimeter forumlae. Wire dia to use is coming about 9mm. Next I will look into finalizing and sourcing right wire ( and budgeting) :)
  8. T

    Need advice for my toroidal core dimensions

    Hi warpspeed, Actually now I understand what you mean by largest dia - it means inner circumference of toroid / number of turns = dia of wire to be used (including insulation) Welding wire available in market have very thick insulation and inside copper is not that fat, the only benefit could...
  9. T

    Need advice for my toroidal core dimensions

    Thanks for suggesting on welding cable, I can order from amazon, I also have solar wires but they are not that flexible it seems!!!
  10. T

    Need advice for my toroidal core dimensions

    Thank you warpspeed for coming, Need to mention that secondary winding stage was a herculean task, my fingers have not yet recovered after almost a month. Nice clarification about turn ratio, I too reached roughly 1/8 when voltage was dropping on load, so I kept reducing turns, for this reason...
  11. T

    Need advice for my toroidal core dimensions

    I have completed secondary (220v) and fiddle with secondary turns. My egs test rig is ready, idle power losses are low like 7watt @48vdc As we have done basic test by warpspeed procedure and it is consistent, unfortunately I cannot go in great deepth in this immediately, because this is not my...
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    Need advice for my toroidal core dimensions

    Actually he knows that 10 workers budget will be happily alloted, if he ask more it will be granted. So he is not really cheating them, scam part starts somewhere in upstream, something very dark about these IT business, when all other industry try to be efficient, manage their cost... IT...
  13. T

    Need advice for my toroidal core dimensions

    It will happen for sure, becuase a "reserve currency" is not something the world really needs to operate, but global trading would be severely impacted... Cuz now you have lot less money. Yes Indian IT industry is not what most people believe, work happens there correlates with maybe less...
  14. T

    Need advice for my toroidal core dimensions

    Yes, I realize it, that is why I am doing it step by step, big uncertainty were on core & copper procurement sides. If some difficulty is faced using egs002 then I should be able to use in a square wave mode, thats why its needed. I left IT field long time ago, I do programming to solve my...
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    Need advice for my toroidal core dimensions

    What might have happened is, sometime forum had moved to a new web hosting provider which assigned them an IP that was in ban list in some countries. Or it is possible that forum is on a shared IP Ideally ISPs should periodically refresh ban list, but sometimes they forget. Due to immense...

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