PL8160

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Electrical inductors are referred to as fixed inductors because they typically require no external energy for their operation. The PL8160, also known as a series-connected electrolytic capacitor, is one type of fixed inductor and is widely utilized in various fields. This article will discuss the application field and working principle of the PL8160.

Application Field

The PL8160 is mainly used for voltage stabilization, active damping, and power conversion, and it is also widely used in other applications such as:

• Power factor correction: The PL8160 is suitable for powering 3 phase AC motors on single phase input, where its series-connected capacitance can help to smooth the waveforms and increase power factor.
• Parallel connection: The PL8160 can be used in a parallel connection to achieve high power ratings and higher current ratings.
• Power line conditioning: The PL8160 is often used to provide power line conditioning, so that power can be supplied to sensitive electronic equipment that is susceptible to external interference.
• Switch-mode power supplies: The PL8160 can be used in switch-mode power supplies to improve efficiency and reduce size and weight.

Working Principle

The PL8160 series-connected electrolytic capacitor works on the principle of two capacitors with a common center tap. When a voltage is applied across this arrangement, the two capacitors alternately charge and discharge in an alternating current (AC) cycle, producing a “swinging” effect on the voltage and current. This is known as the series-resonant effect, and is the main operating principle of the PL8160.

In order for the series-resonant effect to happen, the capacitors must be of equal value. If the capacitors are not equal, their impedance will not be symmetrical, and the series-resonant effect will not be realized. Furthermore, the connecting leads must be short, and all components must be tightly bound together in order for the PL8160 to operate as a choke.

The PL8160 can also be used as an output filter for switch-mode power supplies. In this application, the PL8160 acts as a low pass filter, blocking high frequency noise from the power supply while allowing the DC component to pass through. This helps to improve the efficiency and noise immunity of the power supply.

Finally, the PL8160 is used for inductor applications such as RF interference suppression, decoupling energy storage, and noise filtering. The PL8160 acts as an inductor when it is connected in series with an alternating current (AC) circuit, and it helps to reduce voltage spikes, suppress RF interference, and moderate rapid voltage changes.

Conclusion

The PL8160 series-connected electrolytic capacitor is a fixed inductor that is widely used for a variety of applications. Its primary uses include voltage stabilization, active damping, and power conversion, as well as power line conditioning, switch-mode power supplies, and inductor applications. The PL8160 functions through the series-resonant effect and when used as an output filter, it helps to improve the efficiency and noise immunity of the power supply.

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