• HCO/HCG Capacitors

  Designed for AC harmonic filtering or power factor correction applications.

• High Voltage Power Capacitor (LV-6)
• MAC-UM Capacitors

  Designed for PCB board mounting.

• Three Phase (X382) Capacitors

  Designed for 3 phase filtering and power factor correction.

Capacitors placed on AC voltage lines to filter them are called AC filter capacitors. On three-phase AC power lines, these capacitors can be placed in either a delta or wye configuration.

• In a delta configuration, the capacitors are connected between the different phases.
• In a wye configuration, the capacitors are connected between each phase and a central point. This neutral point is sometimes connected to the ground or sometimes left as a floating neutral, depending on the system design.

1. Low-Pass Filters: In low-pass filters, capacitors are used to allow low-frequency signals to pass through while attenuating higher frequencies. This is achieved by placing the capacitor in parallel with the load. The capacitor impedance decreases with increasing frequency, allowing low-frequency signals to pass with minimal resistance.

2. High-Pass Filters: Conversely, in high-pass filters, capacitors are used to block low-frequency signals and allow higher frequencies to pass. In this configuration, the capacitor is placed in series with the load. At low frequencies, the capacitor impedance is high, effectively blocking the signal, while at high frequencies, the capacitor impedance decreases, allowing the signal to pass through.

3. Band-Pass Filters: Band-pass filters allow a specific range of frequencies to pass while attenuating frequencies outside of this range. Capacitors are used in conjunction with inductors (or resistors) to achieve this. Capacitors help define the upper and lower cutoff frequencies of the filter.

4. Tuning Circuits: Capacitors are commonly used in tuning circuits in radio-frequency (RF) applications. These circuits are used to select specific frequencies from a broader spectrum. Capacitors in tuning circuits can be variable to allow for frequency adjustment.

5. Power Factor Correction (PFC) Circuits: Capacitors are also employed in power factor correction circuits to improve the power factor of electrical systems. These circuits help reduce reactive power consumption, leading to more efficient energy usage.

6. EMI/RFI Filters: Capacitors are used in electromagnetic interference (EMI) and radio-frequency interference (RFI) filters to suppress unwanted electrical noise. These filters are essential in electronic equipment to ensure proper operation and compliance with electromagnetic compatibility (EMC) standards.

ASC AC capacitors feature compact dimensions, a high AC load capacity, and optimized dielectric strength. They impress with their high resistance to harsh operating conditions such as high humidity. When selecting capacitors for AC filter applications, considerations include capacitance value, voltage rating, temperature stability, and tolerance. Different types of capacitors such as ceramic, electrolytic, film, and tantalum capacitors may be used depending on the specific requirements of the application. Additionally, safety standards and regulations must be adhered to when designing and implementing AC filter circuits.