What is chopper discuss its working principle also explain constant frequency control and variable frequency control
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In electronics , a chopper circuit is used to refer to numerous types of electronic switching devices and circuits used in power control and signal applications.
arafatjewel2p76n2o:
A chopper is basically a dc to dc converter whose main function/usage is to create adjustable dc voltage from fixed dc voltage sources through the use of semiconductors.
http://www.circuitstoday.com/choppers-an-introduction
you can go to this website for a nice explanation
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