I want to get very high current flow thought secondary winding of transformer on my 3 Ohm load. As I apply high voltage of secondary to the load the voltage across it drops dramatically. Only about 2% of initial voltage (of unloaded secondary) is presented at the load. What can I do to achieve larger voltage drop across the load?
If the secondary winding would have same ohmic resistance as load R1, that is 3 Ohms, would then half of secondary's unloaded voltage be then dropped across R1 (and half across secondary winding)?
Here, I used two transformers to power up my load. I need higher voltage (+100V), so 220V was only accessible, but I couldn't plug my load directly into wall socket because the fuse would break at the same moment I would plugged in my load - so I used transformer which would allow me to use same voltage but higher currents. In addition, I was counting for load to sink few tens of amps, but transformers weren't made for such currents. But I meant to use them just for a few milliseconds - in pulses so transformers would have time to cool down and not melt. Here are actual specs for both transformers: 220V to 15V - secondary's current is 4A and primary's 1A, 15V to 220V - secondary's current is 0.5A and primary's 1A.
I know that none of two transformers meet my requirements but I was sure that second transformer could generate few tens of amps only for a fraction of a second. And that is really basically what I want; a transformer that could supply around 220V or so while generating current of few tens of amps for a few milliseconds then a second or so of pause until next current spike. But would I need a transformer that can supply 100A of continuous current through secondary, even if wanted to use same amount of current for only a fraction of a second?