JMY TECH

JMY TECH Specialize in electronic hardware & softwares,CCTV installation,solar system installation, system up

30/10/2024

Technology makes life easy and more enjoyable but technical faults in these gadgets gives you sleepless nights.
With JMY Tech we get u covered

30/08/2024

tv repair

For sale
29/02/2024

For sale

20/01/2024

Dear followers. Digital World Electronics is giving out prizes to 10 people every month. To qualify for the promotion all you need is to follow the page and invite 5 people to like and follow the page, automatically you are in.
Prizes include smartphones, TV boxes, x box 360 and the grant prize of play station 5.

17/01/2024

Password removal for laptops, mack book, iPhone, android etc

17/01/2024

55" 4K LED SMART TVS SCREEN REPLACEMENT From R3700. Contact us for more info.

26/06/2022

Why do some motors need capacitors?

There are three reasons:

1: Single-phase motors are not inherently self-starting. The magnetic field produced in the stator alternates, but does not rotate. In order to get the rotor turning, a second, phase-shifted magnetic field is necessary. There is then a start winding designed into the motor that uses a capacitor to phase-shift the current flowing through it, and that produces the necessary rotation of the field that provides starting torque. Once the motor reaches sufficient speed, a switch opens the start winding circuit (capacitor start), or the motor is designed to operate with the second winding constantly on (capacitor run).



On small three-phase motors, capacitors are often used in phase converters to take a single-phase input and produce a reasonable facsimile of a three phase output to the motor. These are limited in application as the motor really cannot be run at full load, and starting torque is diminished:



On larger three-phase motors, capacitors are used to improve the power factor of the motor. See:

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Germiston

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