Hey guys,
Thanks for all your help on the previous thread about loading my Jensen. It was very easy, once you read and understod the data sheet. This questions, or series of questions, is more about transformers in general with some loading involved.
I'm looking at the OEP A262A3E (http://www.oep.co.uk/audio_transformers_high_performance/audio_transformers_high_performance.html) mic in transformer. Firstly, something I've noticed that is different about this transformer is that the rations is listed as 1+1:6:45+6.45. I'm assuming that this transformer has two primaries and two secondaries. This brings me to my first set of questions....
When and why do you want to hook these up in parrallel? When and why do you want to hook there up in series? Is it simpily a gain thing? Would you hook the primaries in parallel and the secondaries in series to get 1:12.9? Or do you hook the both up in parallel for 1:6.45? And with a series connection, do I take the center tap to ground or just let it hang?
I guess the first main question is mainly, what to do with the extra windings and what are the different applications for this?
So, once I figure out the correct ratio, I need to figure out how to load it. Since there is no 'example circuit' I need to figure out how to load it, which I know how to because of the other thread!!
So, I'm going to assume, for example sake, that both windings are hooked in parallel. To the best of my understanding, the ratio will be 1:6.45. Given that, the loading resistor should measure, roughly, 62.4K, to get approx. 1500 ohm on the primary, correct?
Also, on the first thread, it was said that the Jensen transformer did not need a zobel network. Does this one need one? How does one determine if one is needed?.
Once again, thanks in advance :thumb: :green: :!:
Thanks for all your help on the previous thread about loading my Jensen. It was very easy, once you read and understod the data sheet. This questions, or series of questions, is more about transformers in general with some loading involved.
I'm looking at the OEP A262A3E (http://www.oep.co.uk/audio_transformers_high_performance/audio_transformers_high_performance.html) mic in transformer. Firstly, something I've noticed that is different about this transformer is that the rations is listed as 1+1:6:45+6.45. I'm assuming that this transformer has two primaries and two secondaries. This brings me to my first set of questions....
When and why do you want to hook these up in parrallel? When and why do you want to hook there up in series? Is it simpily a gain thing? Would you hook the primaries in parallel and the secondaries in series to get 1:12.9? Or do you hook the both up in parallel for 1:6.45? And with a series connection, do I take the center tap to ground or just let it hang?
I guess the first main question is mainly, what to do with the extra windings and what are the different applications for this?
So, once I figure out the correct ratio, I need to figure out how to load it. Since there is no 'example circuit' I need to figure out how to load it, which I know how to because of the other thread!!
So, I'm going to assume, for example sake, that both windings are hooked in parallel. To the best of my understanding, the ratio will be 1:6.45. Given that, the loading resistor should measure, roughly, 62.4K, to get approx. 1500 ohm on the primary, correct?
Also, on the first thread, it was said that the Jensen transformer did not need a zobel network. Does this one need one? How does one determine if one is needed?.
Once again, thanks in advance :thumb: :green: :!:
