Transcript Slide 1 - Salisbury University

CHAPTER 4
Diodes
Microelectronic Circuits, Sixth Edition
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Microelectronic Circuits, Sixth Edition
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Figure 4.2 The two modes of operation of ideal diodes and the use of an external circuit to limit (a) the forward current and
(b) the reverse voltage.
Microelectronic Circuits, Sixth Edition
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Microelectronic Circuits, Sixth Edition
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Figure 4.5 Diode logic gates: (a) OR gate; (b) AND gate (in a positive-logic system).
Microelectronic Circuits, Sixth Edition
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Microelectronic Circuits, Sixth Edition
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Figure 4.13 Development of the diode small-signal model.
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Figure 4.14 (a) Circuit for Example 4.5. (b) Circuit for calculating the dc operating point. (c) Small-signal equivalent circuit.
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Figure 4.16 Circuit symbol for a zener diode.
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Figure 4.17 The diode i–v characteristic with the breakdown region shown in some detail.
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Figure 4.18 Model for the zener diode.
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Figure 4.19 (a) Circuit for Example 4.7. (b) The circuit with the zener diode replaced with its equivalent circuit model.
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Figure 4.20 Block diagram of a dc power supply.
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Figure 4.21 (a) Half-wave rectifier. (b) Transfer characteristic of the rectifier circuit. (c) Input and output waveforms.
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Figure 4.22 Full-wave rectifier utilizing a transformer with a center-tapped secondary winding: (a) circuit; (b) transfer characteristic
assuming a constant-voltage-drop model for the diodes; (c) input and output waveforms.
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Figure 4.23 The bridge rectifier: (a) circuit; (b) input and output waveforms.
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Figure 4.24 (a) A simple circuit used to illustrate the effect of a filter capacitor. (b) Input and output waveforms assuming an ideal diode. Note that the
circuit provides a dc voltage equal to the peak of the input sine wave. The circuit is therefore known as a peak rectifier or a peak detector.
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Figure 4.26 Waveforms in the full-wave peak rectifier.
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Figure 4.29 Applying a sine wave to a limiter can result in clipping off its two peaks.
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Figure E4.26
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Figure 4.32 The clamped capacitor or dc restorer with a square-wave input and no load.
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Figure 4.34 Voltage doubler: (a) circuit; (b) waveform of the voltage across D1.
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Figure P4.2 (c)
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Figure P4.4 (g)
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Figure P4.23
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Figure P4.74
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Figure P4.95
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