Friday 4 July 2014

resistors - Why is this capacitor hooked up to a 9volt electric motor?


Capacitor with 9volt motor I took apart a sharper image personal fan run by a 9volt battery.


I understand a resistor is sometimes necessary, such as when preventing light emitting diodes from burning out. How about a 9volt motor run on a 9volt battery? Is a resistor necessary? Can a capacitor substitute for a resistor in some cases? (that was my guess as to why it has a capacitor) Is the function of this capacitor to slow the fan down, and if so does that mean running it straight to the battery might burn it out?




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