bipolar_12v_psu
Differences
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| bipolar_12v_psu [2009/03/08 03:10] – reorganized for hierarchal headings, cleaned up some language nebula | bipolar_12v_psu [2010/02/28 16:46] (current) – nils | ||
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| ===== Three Methods ===== | ===== Three Methods ===== | ||
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| ==== Center Tap Transformer ==== | ==== Center Tap Transformer ==== | ||
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| Many small print transformers will give more than their rated voltage when little current is drawn. So in many cases 12 V transformers can also be used. Build the whole circuit and measure at the input of the 7812. You should have little more than 15 V at this point. In fact the 7812 is rated for an input voltage of 14.5 V-35 V. Again, don´t forget that our mains supply can vary between +5% and -10%! | Many small print transformers will give more than their rated voltage when little current is drawn. So in many cases 12 V transformers can also be used. Build the whole circuit and measure at the input of the 7812. You should have little more than 15 V at this point. In fact the 7812 is rated for an input voltage of 14.5 V-35 V. Again, don´t forget that our mains supply can vary between +5% and -10%! | ||
| - | [[http://www.php.net|{{http://img468.imageshack.us/img468/6259/29166167ca1.jpg}}]] | + | [[http://midibox.org/ |
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| + | Click to view the full-size .pdf file. | ||
| ==== With a Single Transformer ==== | ==== With a Single Transformer ==== | ||
bipolar_12v_psu.txt · Last modified: 2010/02/28 16:46 by nils