20A EMI Filter 3 Stage Excellent Noise Filtering Audio Amplifier Power Supply Filtering Board AC110V‑250V Item Type: EMI Filter Material: PCB Input Voltage: Single phase AC 110-250V Output Voltage: Single phase AC 110-250V Load Rated Current: 20A Input Port: 3 wire 7.62 socket input Output Port: 2 wire 7.62 socket output Design Features: 1. First stage differential mode filtering, two differential inductors perform differential mode filtering on the AC power supply to suppress mid to high frequency interference 2. Second stage common mode filtering, can combine into a common mode filter through X2 capacitors and common mode inductors 3. Three stage common mode filtering, due to the use of two stage filtering, the effect of filtering noise is better. It can effectively suppress the problem of rapid transient group pulse interference with a repetition frequency of several thousand hertz in certain user sites