One of the most commonly used passive components in capacitive electronics, it is widely used in various circuits. Choosing the right capacitor plays a crucial role in the stability and efficacy of the circuit.
The category of capacitors
Capacitor main categories.
How to choose the right capacitor?
The selection of the appropriate capacitor is mainly based on the aspects of capacitance value, frequency, voltage, working environment, and installation size.
Capacitance
Capacitance is one of the most important parameters of a capacitor, which indicates the ability of a capacitor to store electrical energy.
The ability of a capacitor to store charge is its capacitance. When selecting a capacitor, you need to consider the minimum and maximum capacitances required by the circuit, as well as the relationship between these capacitances and the power of the circuit. Small devices may require small capacitors, while larger devices may require large capacitors.
Frequency
The impedance of a capacitor in a circuit varies with frequency, and the higher the frequency, the smaller the impedance. Therefore, it is necessary to select the appropriate capacitor according to the operating frequency of the circuit. For example, for high-frequency circuits, you may want to choose a high-frequency porcelain dielectric capacitor or a mica capacitor. And for low-frequency circuits, paper or low-frequency porcelain dicapacitors may be a better choice.
Voltage
The maximum voltage that a capacitor can withstand is another critical parameter. For low-voltage circuits, a capacitor with a lower operating voltage should be selected. For high-voltage circuits, capacitors that operate at a higher voltage or can withstand higher voltages should be selected.
Working environment
The selection of capacitors should be selected according to the working environment, mainly including temperature and humidity and other factors. For example, some capacitors may have degraded performance at high temperatures or be susceptible to moisture in high humidity environments. Therefore, when selecting a capacitor, its application in the intended operating environment should be considered.
Installation:
When using capacitors, it is necessary to consider the installation site regulations. There are many shapes of capacitors, and the shape and pin size of the capacitor should be selected according to the actual situation. For example, it is best to use a through-center capacitor as a capacitor that is common to the high-frequency side, which is not only easy to install, but also can be used as a terminal application.
Rizhao Weide Electronic Technology Co., Ltd. is a high-tech enterprise integrating research, development, production and sales, mainly engaged in the research and development and sales of electronic communication products, automation systems, computer peripheral equipment and software products.
The company has system solutions such as unattended weighing system, intelligent cloud safety supervision system, unattended delivery system, belt conveyor anti-stacking linkage control system, etc.