variable condenser

简明释义

可变电容器

英英释义

例句

1.In the old radio set, the variable condenser plays a crucial role in tuning the frequency.

在旧收音机中，可变电容器在调谐频率中起着至关重要的作用。

2.The variable condenser is essential for adjusting the capacitance in high-frequency circuits.

可变电容器对于调整高频电路中的电容是必不可少的。

3.Many amateur radio operators prefer using a variable condenser for better tuning control.

许多业余无线电爱好者更喜欢使用可变电容器以获得更好的调谐控制。

4.The radio technician adjusted the variable condenser to improve the signal clarity.

无线电技术员调整了可变电容器以改善信号清晰度。

5.He replaced the faulty variable condenser in his vintage amplifier.

他更换了复古放大器中故障的可变电容器。

作文

In the world of electronics, components play a crucial role in the functionality and efficiency of devices. One such essential component is the variable condenser, which is widely used in radio frequency applications. A variable condenser (可变电容器) is an electrical component that allows for the adjustment of capacitance. This adjustability makes it particularly useful in tuning circuits, such as those found in radios and televisions. The primary function of a variable condenser is to store electrical energy in the form of an electric field. By changing the distance between the plates or altering the surface area of the plates, users can modify the amount of capacitance. This characteristic is vital for tuning into different frequencies, as it allows the device to select specific signals while filtering out unwanted noise. Understanding how a variable condenser works requires a basic grasp of capacitance. Capacitance is defined as the ability of a system to store charge per unit voltage. The formula for capacitance (C) is given by C = Q/V, where Q is the charge stored and V is the voltage across the plates. In a variable condenser, as the capacitance changes, so does the ability to store charge, which directly impacts the performance of the circuit. One common application of a variable condenser is in the tuning of radio receivers. When a user wants to listen to a specific radio station, they adjust the variable condenser to change the resonant frequency of the circuit. The resonant frequency is the frequency at which the circuit naturally oscillates, and it can be tuned to match the frequency of the desired radio signal. This process ensures that the radio picks up the intended broadcast clearly, without interference from other signals. Moreover, variable condensers are not limited to radio technology. They are also utilized in various other electronic devices, including oscillators, filters, and amplifiers. Their ability to fine-tune capacitance makes them versatile components in many applications. In modern electronics, while digital tuners and automatic frequency control systems have largely replaced traditional variable condensers in some devices, they still hold significant importance in specific applications where manual tuning is preferred or required. For hobbyists and professionals working with analog circuits, understanding and utilizing a variable condenser is essential. In conclusion, the variable condenser (可变电容器) is a fundamental component in the field of electronics, enabling users to adjust capacitance and tune circuits effectively. Its significance spans across various applications, particularly in radio technology, where precise tuning is crucial for optimal performance. As technology continues to evolve, the principles behind the variable condenser remain relevant, showcasing the enduring importance of this component in both historical and modern contexts.