The connection between film capacitors and analog circuits

The emergence of electronic products has brought a lot of help and entertainment to our work and life. For example, mobile phones can make and receive calls, video calls, and shop online, which are inseparable from the various electronic components and circuits that assemble electronic products.

In electronic products, various electronic components are soldered on the printed circuit board according to certain rules, converting signal transmission into symbols that we can understand, so that electronic products can function, such as making and receiving phone calls, shopping online, etc.

When learning about electronic components, you often see analog circuits. What are analog circuits? Do you know?

Analog circuit is a type of electronic circuit that is used to transmit, transform, process, amplify, measure and display analog signals.

Why is it called an analog circuit? The word "analog" comes from a foreign language, which means that in a circuit, the change in voltage or current is proportional to the change in the real signal, so this circuit is called an analog circuit.

Analog circuits can be amplifier circuits, signal calculation and processing circuits, oscillation circuits, modulation and demodulation circuits, and power supplies. Analog circuits play an important role in communications, audio, video processing, industrial automation and many other fields.

However, in analog circuits, various noises and interferences can easily cause distortion and errors during signal transmission, which can lead to performance degradation and damage to electronic products, and can also cause electronic products to malfunction and become unusable.

To solve this problem, it is important to choose the right capacitor for analog circuits, and film capacitors are the best choice. Film capacitors have excellent frequency characteristics and a wide frequency response. They can maintain a stable capacitance value and low dielectric loss over a wide frequency range, thereby ensuring that the signal is not distorted during transmission. This is very important for analog circuits because analog circuits usually need to process continuously changing signals.

The dielectric loss of film capacitors is very small, which means that during signal transmission, the energy loss caused by the capacitor itself is very small, which helps to maintain the integrity and clarity of the signal and improve the performance of analog circuits.

Film capacitors have excellent frequency characteristics and low dielectric loss, which are critical to analog circuits. It can be said that film capacitors are the preferred capacitors for analog circuits.