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2.4.2 Rectification Word Document | GCE AS/A
2.4.2 Rectification Word Document | GCE AS/A

... We can use the work from our previous topic to determine the peak value of any rms a.c. input voltage. The peak output voltage will then depend on whether the rectification method is half-wave or full-wave. i. If half-wave rectification is used then the peak output voltage value will be 0.7V less th ...
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... secondary winding. The relationship of A.C. to D.C. (secondary RMS current to rectified D.C. output) for typical circuits and loads is given in the technical data on page 7 of this section. Operating duty cycle, type of cooling (natural convection in free air or otherwise) and the power line input v ...
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... fixed time, set by the modulator, in response to the input voltage and the frequency setting resistor. This on-time is proportional to the desired output voltage, divided by the input voltage. With this proportionality, the frequency is essentially constant over the load range where inductor current ...
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Buck converter



A buck converter is a voltage step down and current step up converter.The simplest way to reduce the voltage of a DC supply is to use a linear regulator (such as a 7805), but linear regulators waste energy as they operate by dissipating excess power as heat. Buck converters, on the other hand, can be remarkably efficient (95% or higher for integrated circuits), making them useful for tasks such as converting the main voltage in a computer (12V in a desktop, 12-24V in a laptop) down to the 0.8-1.8V needed by the processor.
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