TU56 Motor Run Capacitors.

Ok an asynchronous motor, no electronics involved. -Rik -----Oorspronkelijk bericht----- Van: "Camiel Vanderhoeven" <iamcamiel at gmail.com> Verzonden: ?3-?9-?2014 20:53 Aan: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Onderwerp: Re: TU56 Motor Run Capacitors. And of course, Wikipedia can be helpful: (from http://en.wikipedia.org/wiki/Motor_capacitor) Run capacitors Some single-phase AC electric motors require a "run capacitor" to energize the second-phase winding (auxiliary coil) to create a rotating magnetic field while the motor is running.[3] Run capacitors are designed for continuous duty while the motor is powered, which is why electrolytic capacitors are avoided, and low-loss polymer capacitors are used instead. Run capacitors are mostly polypropylene film capacitors and are designed for continuous duty, and they are energized the entire time the motor is running.[1] Run capacitors are rated in a range of 1.5 to 100 microfarads (?F or mfd), with voltage classifications of 370 V or 440 V.[1] If a wrong capacitance value is installed, it will cause an uneven magnetic field which causes the rotor to hesistate at those spots that are uneven, which can be observed as uneven motor rotation speed, especially under load. This hesitation can cause the motor to become noisy, increase energy consumption, cause performance to drop, and cause the motor to overheat.[3] On Wed, Sep 3, 2014 at 8:29 PM, Camiel Vanderhoeven <iamcamiel at gmail.com> wrote: