Recently I took apart 2 identical transformers from 2 identical devices. Each one has 6 leads on the output (quad core I think it's called). Since circuit lab only has double transformers, I used 2 of them. Now, I want to use them to make a +/- 20V power supply. Firstly, I came up with this:
simulate this circuit – Schematic created using CircuitLab
Then, I thought why not use all the leads like this:
1) Will the second circuit give more amperes?
2) Is it okay if I connect in parallel 2 transformers with different voltages (in order to increase amperage)?
3) In a multi-core transformer, are all cores independent? For example, If I use one core to power a device, will this affect the amperage of the other core?
Best Answer
Yes, but not where you want them. See 2).
No. The different voltages will try to correct each other and high currents will flow and, rather quickly, burn out the transformer.
Assuming you mean "multi-winding" rather than "multi-core", the answer is that they are somewhat dependent.