for controlling a motor if it is in a important application we use rectifiers because the ripple factor of the chopper is very high in comparison with choppers
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Chemical Processes often have large power rectifiers as their primary source of DC Power. If these rectifiers are turned off, either for maintenance or a malfunction, there is a danger to the hardware of the chemical process. To solve this problem, standby rectifiers are installed in parallel with the main rectifiers. These rectifiers, known as Polarisation Rectifiers, pass electric current through the process and prevent damage....NEOWATT ENERGY
chopper
The advantage of chopper amplifiers is that they help to amplify really low signals with high gains. This is commonly useful for electronic instrumentation.
A chopper to chop DC into AC is an electronic switching. Digital is data bits or machine language whereby a processor can make decisions
chopper use a ststeing perpose..... dc means direct current that is low voltage