Rectifier filter board (double parallel connection)

The following is a summary of the welding and description components of the physical board: 1. 4.7k resistor 2 (This resistor limits the brightness and darkness of the LED light, that is, it limits the current.) 2. 3.5mm LED 2 (The size of the LED is arbitrary, what is there? Just install whatever you like, mainly to display the power supply, and to consume the electricity in the capacitor after turning off the power. SMD ones are not suitable.) 3. 104/63v capacitor 2 (104 capacitor is fine, ABB capacitor is fine) Yes, film capacitors are better, such as German Weimar capacitors, etc.) 4. 103/63v capacitors  4 (the purpose of these 4 capacitors is to interfere with high-frequency signals, the power frequency is 50hz, there is no need to worry about the capacitors passing through each other) The direct effect is to short-circuit the power supply, and it is only short-circuited at high frequencies. It also acts as a protective diode. When the power is turned on, the four capacitors have a large instantaneous current, and these four capacitors are short-circuited instantly, functioning as a protective diode. ) 5. 10000uf/63v * 4 (I installed ELNA’s 10000uf/50v capacitor here. This can vary from person to person.) 6. 7.62 3P terminal  3 (No explanation, I personally think this is easier to use. ) 7. Rectifier bridge BR3510L  1 (or KBJ3510 *1) (Considering that I had to buy a new rectifier bridge before because the aperture of the rectifier bridge was wrong, it was troublesome, so this time the board adds two types of rectifier bridges, choose one of the two) Yes, if conditions permit, the larger the voltage and current value of the rectifier bridge, the better. But it is enough. I will use KBU1510 instead.) Note: The demonstration board made below is different from the board I published, but The principle is the same and has been optimized a bit. Please rest assured when making the board. The component locations are roughly similar. The following pictures are for reference.

The following are the specific welding steps 1. Welding resistors (the order of welding electronic components is from small to large, this is just a personal habit, everyone is free to do so.) 2. Welding bypass capacitor 3. Welding LED 4. Welding 7.62 terminals and KBU1510 rectifier bridge 5. Welding Good filter capacitor 6. Power-on test 7. I have uploaded a test video below, which includes teaching wiring and audio testing. Due to the rudimentary equipment, the effect is audible. Don’t mind it. It’s actually pretty good. It’s in the engineering attachment. Everyone should be able to see it inside. If you have any questions, you are welcome to discuss them actively!