Twindac+ and Django (BD-Design)

by dr.cube , Wednesday, September 20, 2006, 13:09 (6434 days ago) @ Bert

Hi Bert,

Well, technically a transformer caNot "amplify", it caNonly "trade" Voltage for current (Power, which is U*I, caNot increase and will in fact decrease due to some losses (iron/copper)).
If you switch the output tap of the django (selecting different output levels), the input impedance also changes (See http://www.stevens-billington.co.uk/page102.htm), and therefore the reflected primary impedance of the transformer inside the dac (the impedance that the current source at the input of the trafo "sees") is also different.
So for me the explanation doesn't hold, technically there seems to be a transformer which can be spared. I don't think that there in principle is anything achievable by 2 transformers in a row that caNot be achieved using a single one (which of course has to be proberly designed)

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