Check the listing for details. 20A Power Filter Purifier EMI High Frequency and Current Filter Board Finished. Color: 20A Power Filter Purifier EMI High Frequency and Current Filter B, Condition: New. Listed at 21.61 USD. 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 20A Power Filter Purifier EMI High Frequency and Current Filter Board Ready Introduction：The power filter is an electrical device that effectively filters out frequencies with a certain frequency in the power line or frequencies outside the frequency. By connecting a power filter to the power line, a power signal of a certain frequency is obtained or a power signal after a certain frequency is eliminated. With this feature of the power supply filter, a square wave group or a composite noise passing through the power supply filter can be converted into a sine wave of a certain frequency. The power supply filter is a passive two-way network. It has a power supply at one end and a load at the other end. The internal circuit of the power filter, the principle of the power filter, is an impedance adaptive network: the greater the impedance adaptation on the input and output sides of the power filter, and on the supply and load sides, the more effective the attenuation of electromagnetic interference! This 20A power supply filter current is as high as 4400W, and it works with 2500W ~ 3000W for a long time. The diameter of electromode coil is 1.4mm and the height is 31mm. Maximum current 20A, double-sided 1.6 tin-plated sheet! Parameters:Voltage: AC 0V ~ 220VCurrent: 20ASize: (W) 35 * (L) 148 * (H) 35 mmElectro coil diameter: 1.4 mm Package includes:1pc 20A EMI Power Filter Finished Board 1111MicrosoftInternetExplorer402DocumentNotSpecified7.8 磅Normal0 Payment Method: PayPal preferred Shippment:We provide free shipping to international via China Post Airmail. We can also ship by TNT/EMS/DHL/FedEx for alternative shipping method for corresponding fees. Please let us know before payment if you need split shipment. Returns & Replacements & Repair:We accept returns & replacements within 30 days from the day the customer receive the products, please make first contact within 30 days from receiving the order. Products should be returned in original condition. As a benefit to our customers, we also provide repair within 3 months from the day when this item is shipped out, after repair is done, we will send you the item, but the customer should pay both shipping ways. Feedback:Your Feedback is really important to us, please take a few seconds to leave great feedback if you are satisfied with our product or service, thank you so much!