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:
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?