How can a capacitor improve the power factor of an electrical installation?

It’s quite simple. By installing capacitors or capacitor banks. Improving the power factor of an electrical installation consists of giving it the means to “produce” a certain proportion of the reactive energy it consumes itself.

Can a feed-forward capacitor improve AC performance?

Adding a feed-forward capacitor can lead to improvements in noise, stability, load response and PSRR. Of course, you must carefully select the capacitor to maintain stability. When coupled with a noise-reduction capacitor, it becomes possible to greatly improve AC performance.

Why do I need a capacitor across the top resistor?

Within the bandwidth of the error amplifier, the AC elements (such as noise) of the reference voltage are gained up as well. By adding a capacitor across the top resistor (CFF), you are introducing an AC shunt for a particular range of frequencies. In other words, you are keeping the AC elements in that frequency range within unity gain.

How does a capacitor work?

The capacitor is a receiver composed of two conductive parts (electrodes) separated by an insulator. When this receiver is subjected to a sinusoidal voltage, the current and therefore its power (capacitive reactive) is leading the voltage by 90°.

Should you use a feed-forward capacitor with a low-dropout regulator?

Much like the noise-reduction capacitor (CNR/SS), adding a feed-forward capacitor has multiple effects. These effects include improved noise, stability, load response and the power-supply rejection ratio (PSRR). The application report, “Pros and Cons of Using a Feedforward Capacitor with a Low-Dropout Regulator,” covers these benefits extensively.

How to optimize AC power supply performance?

Of course, you must carefully select the capacitor to maintain stability. When coupled with a noise-reduction capacitor, it becomes possible to greatly improve AC performance. These are a just few tools to keep in mind for optimizing your power supply.