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Problem: Why does a motor or compressor need a capacitor to run properly? What actually does a capacitor do?

Problem: Why does a motor or compressor need a capacitor to run properly? What actually does a capacitor do?

Answer: Thanks for your interest in our web site! Great question! This is the answer that my HVAC teacher gave us when I was being trained in HVAC service and repair. This is a very simple way to understand how capacitors work. Capacitors store an electrical charge. On alternating current (AC) the current alternates on the voltage from zero to 110 or from zero to 220 volts 60 cycles per second. The run capacitor throws a stored charge in there when the voltage reaches the zero point and keeps the voltage steady instead of all the up and down voltage drops. This makes the motor or compressor run smoothly and more efficient. This is easily seen on an old ocilliscope where you can see the AC current going up and down. 60 cycles per second is pretty durn fast! It is amazing! I hope this answers your question. We sell capacitors on the following page: https://www.arnoldservice.com/?cat=176 We have a real good Youtube video below produced by remingtonrandunivac which is titled: Electric Motor Capacitors- Mysteries Gone!! Thanks remingtonrandunivac for producing this nice video! If you have any other question please email us at: support@arnoldservice.com or comment below. We would love to have your business!

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