Published in International Journal of Advanced Research in Electrical and Electronics Engineering
ISSN: 2321-4775 Impact Factor:1.6 Volume:3 Issue:3 Year: 20 December,2016 Pages:119-122
the relays are used as a switch for many general purpose and industrial applications. They behave like as a close and open switch. The relays can also be used as a device to change the polarity of high voltage and high current dc power with very low cost and in effective way. The method is for connect 2 relays in such a way they both works together to change the polarity as one switch of one relay remains at point A while other at point B so the current flows in clockwise direction while the first relay is closed and second is opened then the relay system changes the direction of current to anti clockwise direction .This way the power supply polarity is changed in dc using simple electromagnetic relays.
Relay, DC Power, Automatic Switch, High Power, Reverse Voltage
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