ME 340 Chapter 10 summary

ME 340 Chapter 10 summary - voltage while full-wave...

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A diode is a nonlinear circuit element that only conducts current in one direction, from anode to cathode. It is made up of a pn junction with free holes and electrons. The diode has 3 operating regions: forward bias, reverse bias, and reverse breakdown. Zener diodes are meant to operate in the reverse breakdown region, providing a constant voltage to the output load regardless of the variable source supply. Ideal diodes are those that are either on or off, on if current flows and off if a negative voltage is applied across the diode. The load-line technique and the piecewise-linear model can be created from the volt-ampere characteristic for a diode to find the operating point of the diode. Rectifiers are diode circuits that can be used to charge a battery or convert ac voltage to dc voltage. Half-wave rectifiers convert only the positive half of the input sinusoidal signal to dc
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Unformatted text preview: voltage, while full-wave rectifiers convert the entire waveform to dc voltage. Wave-shaping circuits are used to convert the input waveform to some desired output waveform. Clipper circuits cut off the input waveform above and below some max and min specified values, respectively. Clamp circuits offset the waveform in the vertical direction by specifying the peak positive or negative voltage to a specific value. Small signal equivalent circuits can be analyzed to find how input and output voltage ripples are related. In this case, dc sources and coupling capacitors can be replaced by short circuits to solve the circuit for the operating point current, allowing us to model the diode as a resistance. Using the diode resistance with the original circuit and only the ac source, the load output voltage can be found by simple linear circuit techniques....
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