Can I power an electromagnet using a car battery charger? I know it’ll be weaker, but will it work?
I have 5 electromagnets. If I connect them in series, will they all have different magnetic force?
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4 Responses to “Can I power an electromagnet using a car battery charger? I know it’ll be weaker, but will it work?”
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Magnetic force is related to the turn diameter, number of turns, core material, and current flowing.
The battery charger will deliver 8 or 12 amps at about 14.5V DC
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You need to look to the power ratings of the individual electromagnets. Each one should have a maximum rated current or voltage, and it is the voltage that is of interest here (if a current rating is given, measure the resistance with an ohmmeter and calculate the appropriate voltage). If the max voltage is 12 or more, a battery charger will work — but pay attention to the current capacity of the charger, and the current demand of the electromagnet. If the voltage rating is less than 12, then you can connect two or more in series (if the rated currents are equal). Other combinations are possible.
If the electromagnet will accept 12 – 14 volt DC, the charger should work. If you connect 5 magnets in series, the same current will pass though each. You did not provide enough info about the electromagnets to determine if the magnetic force would be the same or different.
yes