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DC chopper
This is one stage conversion device which is used for direct conversion of fixed de voltage at a level to an adjustable dc voltage at another level.
Figure DC Chopper
Chopper is high speed on/ off semiconductor switch is represented by a switch SW with an arrow as shown no current will flow if the switch is off and when it is on current will flow in the direction of arrow only.
design a clipper circuit of a sinsoiudial wave of a peak value 25v&minimum value of -12v to make the output voltages of 20&-9v respectively.
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costruction and working of dc motor
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