Description: Features: 100% brand new and high quality This board adopts the principle of the common differential mode lc, which can suppress interference in the switching power supply or other dc power supply. Reduce the ripple of the power supply, and reduce the interference brought by the power supply. Can be used in low voltage (0 v 50 50 v) dc power supply circuits, such as power amplifier board, vehicle equipment, industrial control board, dc electrical appliances, etc. The circuit is flexible to use. When the suppression effect does not meet the requirements, it can be connected in series on several levels to increase the inhibiting capacity. When the working current of the board does not meet the requirements, it can be connected in parallel with several blocks to increase the output current. For the circuit board using positive and negative power supply, two blocks can be overlapped to form a positive and negative energy interference suppression board. The board can be divided into two voltage specifications, 0 25 25 v, 0 50 50 v. The combined filter plate can be selected according to the working voltage range used. The current of the tpa3116 machine makes the energy input more pure, so the amplifier is less noisy. Low voltage dc (0 v 50 50 v) Terminal description: Vin +: positive end of Vin- input: negative of Vout + input: positive end of Vout- output: negative output Specification: Color: Green+Black Size: app. 50x28mm(1.97x1.1in) Quantity: 1 pc Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Filter Board(other accessories demo in the picture is not included.)