Diodes, BJTs, MOSFETs, op-amp configurations, amplifier basics, filters and power supplies.
39 cards · basic cards · AI-written, checked twice. Edit anything.
- What is a diode?
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A two-terminal semiconductor device that conducts in one direction when forward biased and blocks current when reverse biased.- Define forward bias for a diode.
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A positive voltage applied to the anode and negative to the cathode, allowing significant current to flow.- Define reverse bias for a diode.
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A negative voltage applied to the anode and positive to the cathode, blocking current flow.- What is the knee voltage of a diode?
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The minimum forward voltage required for significant current conduction, approximately 0.7 V for silicon diodes.- What does a zener diode do?
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Conducts in reverse bias at a specific breakdown voltage, used for voltage regulation and circuit protection.- What is a rectifier diode?
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A diode designed to convert AC voltage to pulsating DC by allowing current to flow in only one direction.- What is a BJT?
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A Bipolar Junction Transistor, a three-terminal semiconductor device used for voltage and current amplification and switching.- Name the three terminals of a BJT.
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Base, Collector, and Emitter.- What are the three biasing regions of a BJT?
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Active region (linear amplification), Saturation region (fully on), and Cutoff region (fully off).- What is beta (hFE) in a BJT?
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The DC current gain, the ratio of collector current to base current (Ic divided by Ib).- In common-emitter configuration, which terminal is grounded?
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The emitter.- What is the voltage gain of a common-collector BJT configuration?
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Approximately 1 (unity gain), used as an emitter follower for impedance matching.- What does saturation mean for a BJT?
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The transistor is fully on, conducting maximum current with minimal voltage drop between collector and emitter.- What is a MOSFET?
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A Metal-Oxide-Semiconductor Field-Effect Transistor, a voltage-controlled semiconductor device used for amplification and switching.- Name the three terminals of a MOSFET.
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Gate, Drain, and Source.
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