What is the equivalent circuit of a quartz crystal?
The correct answer is A: Series RLC in parallel with a shunt C representing electrode and stray capacitance. What is the equivalent circuit of a quartz crystal is series RLC in parallel with a shunt C representing electrode and stray capacitance. Quartz crystals have series resonance and parallel capacitance. For amateur radio operators, this is important for oscillator knowledge. Understanding this helps when working with crystal oscillators.
Exam Tip
Quartz crystal equivalent circuit = series RLC in parallel with shunt C (electrode/stray). Think 'Q'uartz 'C'rystal = 'S'eries 'R'LC 'P'arallel 'C'. Quartz crystals have series resonance and parallel capacitance. Not parallel RLC, not series with parallel C combination - just series RLC parallel shunt C.
Memory Aid
"Quartz crystal equivalent circuit = series RLC in parallel with shunt C (electrode/stray). Think 'Q'uartz 'C'rystal = 'S'eries 'R'LC 'P'arallel 'C'. Quartz crystals have series resonance and parallel capacitance. Important for oscillator knowledge."
Real-World Application
The equivalent circuit of a quartz crystal: It's a series RLC in parallel with a shunt C representing electrode and stray capacitance. The series RLC represents the crystal's resonance, and the parallel C represents the electrode and stray capacitance. This is the equivalent circuit - series RLC parallel shunt C.
Key Concepts
Why Other Options Are Wrong
Option B: Incorrect. Parallel RLC with C as parallel combination isn't correct - crystal is series RLC in parallel with shunt C. Parallel RLC isn't correct.
Option C: Incorrect. Series RLC with C as parallel combination isn't correct - crystal is series RLC in parallel with shunt C. C as parallel combination isn't the structure.
Option D: Incorrect. Parallel RLC with C as series combination isn't correct - crystal is series RLC in parallel with shunt C. Series combination isn't correct.
题目解析
The correct answer is A: Series RLC in parallel with a shunt C representing electrode and stray capacitance. What is the equivalent circuit of a quartz crystal is series RLC in parallel with a shunt C representing electrode and stray capacitance. Quartz crystals have series resonance and parallel capacitance. For amateur radio operators, this is important for oscillator knowledge. Understanding this helps when working with crystal oscillators.
考试技巧
Quartz crystal equivalent circuit = series RLC in parallel with shunt C (electrode/stray). Think 'Q'uartz 'C'rystal = 'S'eries 'R'LC 'P'arallel 'C'. Quartz crystals have series resonance and parallel capacitance. Not parallel RLC, not series with parallel C combination - just series RLC parallel shunt C.
记忆口诀
Quartz crystal equivalent circuit = series RLC in parallel with shunt C (electrode/stray). Think 'Q'uartz 'C'rystal = 'S'eries 'R'LC 'P'arallel 'C'. Quartz crystals have series resonance and parallel capacitance. Important for oscillator knowledge.
实际应用示例
The equivalent circuit of a quartz crystal: It's a series RLC in parallel with a shunt C representing electrode and stray capacitance. The series RLC represents the crystal's resonance, and the parallel C represents the electrode and stray capacitance. This is the equivalent circuit - series RLC parallel shunt C.
错误选项分析
Option B: Incorrect. Parallel RLC with C as parallel combination isn't correct - crystal is series RLC in parallel with shunt C. Parallel RLC isn't correct. Option C: Incorrect. Series RLC with C as parallel combination isn't correct - crystal is series RLC in parallel with shunt C. C as parallel combination isn't the structure. Option D: Incorrect. Parallel RLC with C as series combination isn't correct - crystal is series RLC in parallel with shunt C. Series combination isn't correct.
知识点
Equivalent circuit, Quartz crystal, Series RLC, Parallel with shunt C, Electrode and stray capacitance
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.