You will need a transformer rated for at least 5A at all over 5V or less. It might be doable to simply increase some turns to an current transformer, since the voltage required is below 1V.
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It can be value declaring that the resistance leads to a voltage drop within the winding, which will cause many the heating impact. It does something else also - it reduces the usable voltage from the coil. Though a measurement shows that there's 16V placed on the coil, Pretty much three.
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The winding really should get no more than hardly heat. If it operates very hot, both make use of a decreased voltage or rewind the coil.
When fairly wanting the figure calculated in advance of, it's actually not unreasonable. At least we are aware that we have been in the correct location. Had the 2nd calculation proven (as an example) one,five hundred turns were desired, then it is obvious that a miscalculation must happen to be manufactured somewhere. At this stage, you would almost certainly should go back to the start and re-do the measurements.
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The resistor cuts down the voltage applied to the motor, so it's essential to evaluate the voltage immediately throughout the motor terminals.
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Together with the clock motor running, measure the voltage across the 1 ohm resistor. You need to get yourself a reading through somewhere between fifteen-25mV for 220-240V 50Hz motors. I can not give an accurate figure for one hundred ten-120V 60Hz motors since I haven't got use of 60Hz ability, but I might guess more info that the current should be about double that of a nominal 230V motor (i.