8V is missing throughout the wire resistance ( V = I × R ) which has a current of 311mA. The motor would not care with regards to the voltage, only The present. and this is the key parameter in all calculations. Although we're constrained by transformers that are made to offer a specified voltage, The good thing is It is easy to operate this at the time we know the way.
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There are lots of strategies to determine the amount of turns needed to operate a clock motor at a special voltage from the first style and design benefit. The strategy described below is sweet, but may be a tad elaborate if taken to extremes (as I did in The outline).
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In particular, Observe the big motor voltage difference between this take a look at course of action and the 1 described previously mentioned. The key reason why for the real difference is definitely the resistance of your wire and the quantity of turns.
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Take note that all descriptions in this post presume 16V operation. You must adapt the process described to go well with the several electrical power source in case you would like to use a little something aside from 16V.
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315mm wire I employed for the exam. The coil is easily checked in advance of final ending, and since the voltages utilised are Safe and sound, you don't want to worry about proper insulation - masking tape is beautifully alright.
Once again, for those who do this, the wire have to be at least 1mm diameter. It is anticipated that many people will never Use a Variac out there, so we more info are going to use resistors to decrease the voltage and latest to something sensible.
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