FCC E6B - 电路元件与半导体

#E6B01🔗

What is the most useful characteristic of a Zener diode?

齐纳二极管最有用的特性是什么？

A constant current drop under conditions of varying voltage

变化电压条件下的恒定电流降

A constant voltage drop under conditions of varying current

变化电流条件下的恒定压降

✓ 正确答案

A negative resistance region

负阻区

An internal capacitance that varies with the applied voltage

随施加电压变化的内部电容

#E6B02🔗

Which characteristic of a Schottky diode makes it a better choice than a silicon junction diode for use as a power supply rectifier?

肖特基二极管的哪些特性使其成为比硅结二极管更好的电源整流器选择？

Much higher reverse voltage breakdown

更高的反向击穿电压

More constant reverse avalanche voltage

更恒定的反向雪崩电压

Longer carrier retention time

更长的载体保留时间

Lower forward voltage drop

更低的正向压降

✓ 正确答案

#E6B03🔗

What property of an LED's semiconductor material determines its forward voltage drop?

LED 半导体材料的什么特性决定其正向压降？

Intrinsic resistance

固有电阻

Band gap

带隙

✓ 正确答案

Junction capacitance

结电容

Junction depth

结深

#E6B04🔗

What type of semiconductor device is designed for use as a voltage-controlled capacitor?

什么类型的半导体器件被设计用作压控电容器？

Varactor diode

变容二极管

✓ 正确答案

Tunnel diode

隧道二极管

Silicon-controlled rectifier

可控硅

Zener diode

齐纳二极管

#E6B05🔗

What characteristic of a PIN diode makes it useful as an RF switch?

PIN 二极管的哪些特性使其可用作射频开关？

Extremely high reverse breakdown voltage

极高的反向击穿电压

Ability to dissipate large amounts of power

能够耗散大量功率

Reverse bias controls its forward voltage drop

反向偏压控制其正向压降

Low junction capacitance

低结电容

✓ 正确答案

#E6B06🔗

Which of the following is a common use of a Schottky diode?

以下哪项是肖特基二极管的常见用途？

In oscillator circuits as the negative resistance element

在振荡器电路中作为负阻元件

As a variable capacitance in an automatic frequency control circuit

作为自动频率控制电路中的可变电容

In power supplies as a constant voltage reference

在电源中作为恒定电压基准

As a VHF / UHF mixer or detector

作为 VHF/UHF 混频器或探测器

✓ 正确答案

#E6B07🔗

What causes a junction diode to fail from excessive current?

结型二极管因电流过大而失效的原因是什么？

Excessive inverse voltage

反向电压过大

Excessive junction temperature

结温过高

✓ 正确答案

Insufficient forward voltage

正向电压不足

Charge carrier depletion

载流子耗尽

#E6B08🔗

Which of the following is a Schottky barrier diode?

以下哪一个是肖特基势垒二极管？

Metal - semiconductor junction

金属-半导体结

✓ 正确答案

Electrolytic rectifier

电解整流器

PIN junction

PIN结

Thermionic emission diode

热电子发射二极管

#E6B09🔗

What is a common use for point-contact diodes?

点接触二极管的常见用途是什么？

As a constant current source

作为恒流源

As a constant voltage source

作为恒压源

As an RF detector

作为射频探测器

✓ 正确答案

As a high-voltage rectifier

作为高压整流器

#E6B10🔗

In Figure E6-2, which is the schematic symbol for a Schottky diode?

在图 E6-2 中，哪个是肖特基二极管的原理图符号？

✓ 正确答案

#E6B11🔗

What is used to control the attenuation of RF signals by a PIN diode?

PIN 二极管用什么来控制 RF 信号的衰减？

Forward DC bias current

正向直流偏置电流

✓ 正确答案

A variable RF reference voltage

可变射频参考电压

Reverse voltage larger than the RF signal

反向电压大于射频信号

Capacitance of an RF coupling capacitor

RF耦合电容器的电容

← 上一节: E6A 📑 返回 E6 大纲下一节: E6C →

FCC E6B - 电路元件与半导体

小节 E6B：电路元件与半导体