Conversion of a transformer into an electromagnet












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Is it possible to convert a voltage transformer into an electromagnet by connecting a small DC voltage source to its primary side?










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    1












    $begingroup$


    Is it possible to convert a voltage transformer into an electromagnet by connecting a small DC voltage source to its primary side?










    share|improve this question











    $endgroup$















      1












      1








      1





      $begingroup$


      Is it possible to convert a voltage transformer into an electromagnet by connecting a small DC voltage source to its primary side?










      share|improve this question











      $endgroup$




      Is it possible to convert a voltage transformer into an electromagnet by connecting a small DC voltage source to its primary side?







      transformer electromagnetism






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      edited 3 hours ago









      Electric_90

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      asked 5 hours ago









      JibeJibe

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          2 Answers
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          $begingroup$

          Just applying DC to a transformer will make a very poor electromagnet, because of the design of the transformer's iron core.



          The core is designed to give a continuous loop of iron from one side of the coils to the other. Rectangular transformers have two loops, giving a squared-off figure of eight. Toroidal transformers use an iron ring. Both are designed to keep the magnetism inside the transformer, which makes it more efficient.



          But since very little magnetism leaks out, it won't be much use as an electromagnet.






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            You would have to remove part of the core to open the magnetic circuit.



            Most 50/60Hz power transformers have E-I laminations, but they are interleaved (alternating E and I on opposite sides) so you would have to saw and/or grind off part of the core material without damaging the winding, more or less ONE of the two possible lines shown here (lamination drawing from here):



            enter image description here






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            • $begingroup$
              Look carefully at the transformer construction. The "E" and the "I" are often separate pieces. If that is the case, the "I" can be removed without sawing.
              $endgroup$
              – Charles Cowie
              1 hour ago











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            2 Answers
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            active

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            2 Answers
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            active

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            3












            $begingroup$

            Just applying DC to a transformer will make a very poor electromagnet, because of the design of the transformer's iron core.



            The core is designed to give a continuous loop of iron from one side of the coils to the other. Rectangular transformers have two loops, giving a squared-off figure of eight. Toroidal transformers use an iron ring. Both are designed to keep the magnetism inside the transformer, which makes it more efficient.



            But since very little magnetism leaks out, it won't be much use as an electromagnet.






            share|improve this answer









            $endgroup$


















              3












              $begingroup$

              Just applying DC to a transformer will make a very poor electromagnet, because of the design of the transformer's iron core.



              The core is designed to give a continuous loop of iron from one side of the coils to the other. Rectangular transformers have two loops, giving a squared-off figure of eight. Toroidal transformers use an iron ring. Both are designed to keep the magnetism inside the transformer, which makes it more efficient.



              But since very little magnetism leaks out, it won't be much use as an electromagnet.






              share|improve this answer









              $endgroup$
















                3












                3








                3





                $begingroup$

                Just applying DC to a transformer will make a very poor electromagnet, because of the design of the transformer's iron core.



                The core is designed to give a continuous loop of iron from one side of the coils to the other. Rectangular transformers have two loops, giving a squared-off figure of eight. Toroidal transformers use an iron ring. Both are designed to keep the magnetism inside the transformer, which makes it more efficient.



                But since very little magnetism leaks out, it won't be much use as an electromagnet.






                share|improve this answer









                $endgroup$



                Just applying DC to a transformer will make a very poor electromagnet, because of the design of the transformer's iron core.



                The core is designed to give a continuous loop of iron from one side of the coils to the other. Rectangular transformers have two loops, giving a squared-off figure of eight. Toroidal transformers use an iron ring. Both are designed to keep the magnetism inside the transformer, which makes it more efficient.



                But since very little magnetism leaks out, it won't be much use as an electromagnet.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 4 hours ago









                Simon BSimon B

                5,095918




                5,095918

























                    2












                    $begingroup$

                    You would have to remove part of the core to open the magnetic circuit.



                    Most 50/60Hz power transformers have E-I laminations, but they are interleaved (alternating E and I on opposite sides) so you would have to saw and/or grind off part of the core material without damaging the winding, more or less ONE of the two possible lines shown here (lamination drawing from here):



                    enter image description here






                    share|improve this answer









                    $endgroup$













                    • $begingroup$
                      Look carefully at the transformer construction. The "E" and the "I" are often separate pieces. If that is the case, the "I" can be removed without sawing.
                      $endgroup$
                      – Charles Cowie
                      1 hour ago
















                    2












                    $begingroup$

                    You would have to remove part of the core to open the magnetic circuit.



                    Most 50/60Hz power transformers have E-I laminations, but they are interleaved (alternating E and I on opposite sides) so you would have to saw and/or grind off part of the core material without damaging the winding, more or less ONE of the two possible lines shown here (lamination drawing from here):



                    enter image description here






                    share|improve this answer









                    $endgroup$













                    • $begingroup$
                      Look carefully at the transformer construction. The "E" and the "I" are often separate pieces. If that is the case, the "I" can be removed without sawing.
                      $endgroup$
                      – Charles Cowie
                      1 hour ago














                    2












                    2








                    2





                    $begingroup$

                    You would have to remove part of the core to open the magnetic circuit.



                    Most 50/60Hz power transformers have E-I laminations, but they are interleaved (alternating E and I on opposite sides) so you would have to saw and/or grind off part of the core material without damaging the winding, more or less ONE of the two possible lines shown here (lamination drawing from here):



                    enter image description here






                    share|improve this answer









                    $endgroup$



                    You would have to remove part of the core to open the magnetic circuit.



                    Most 50/60Hz power transformers have E-I laminations, but they are interleaved (alternating E and I on opposite sides) so you would have to saw and/or grind off part of the core material without damaging the winding, more or less ONE of the two possible lines shown here (lamination drawing from here):



                    enter image description here







                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered 3 hours ago









                    Spehro PefhanySpehro Pefhany

                    206k5156412




                    206k5156412












                    • $begingroup$
                      Look carefully at the transformer construction. The "E" and the "I" are often separate pieces. If that is the case, the "I" can be removed without sawing.
                      $endgroup$
                      – Charles Cowie
                      1 hour ago


















                    • $begingroup$
                      Look carefully at the transformer construction. The "E" and the "I" are often separate pieces. If that is the case, the "I" can be removed without sawing.
                      $endgroup$
                      – Charles Cowie
                      1 hour ago
















                    $begingroup$
                    Look carefully at the transformer construction. The "E" and the "I" are often separate pieces. If that is the case, the "I" can be removed without sawing.
                    $endgroup$
                    – Charles Cowie
                    1 hour ago




                    $begingroup$
                    Look carefully at the transformer construction. The "E" and the "I" are often separate pieces. If that is the case, the "I" can be removed without sawing.
                    $endgroup$
                    – Charles Cowie
                    1 hour ago


















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