Soldering Practice Kit,3 Kits SMD SMT Weldering Skills Training Board(Soldering-

Description: Store New Arrivals Add to Favorite View Feedback Contact Soldering Practice Kit,3 Kits SMD SMT Weldering Skills Training Board(Soldering-All) Description Item model number Soldering Part Number Soldering Style Soldering-All Item Package Quantity 1 Material tin Batteries Required? No Package Dimensions 7.32 x 5.2 x 0.71 inches Item Weight 4.8 ounces Batteries Included? No Wattage 500 watts ✅3 SETS of SUPER VALUE.From easy to difficult SMD components soldering practice kit, high challenge PCB SMD welding skills competition.✅Professional skills, complete this kit, need a certain professional knowledge base, practical training experience.✅High quality material, high-quality double-sided spray tin FR-4 circuit board, easy to solder, not easy to oxidize, contribute to success.✅Technical support, including component list, circuit diagram, principle description and finished product diagram. Please contact us for information.✅Super quantity components: there are many kinds of components, nearly 20 different kinds of electronic components. There are more than 1400 solder joints and more than 500 components. Product Description 3 kinds of SMD practice kits boards help you improve your soldering skills Get 3 sets at a time In order to improve the soldering skill level of students majoring in electronics and electronic enthusiasts, referring to the packaging types of SMD components in the electronic product assembly and debugging skills competition of vocational colleges, the SMD soldering practice board is specially designed to improve the soldering level and speed. 1. Board size: 90 * 60MM 2. Board thickness: 1.6mm 3. Board material: international standard board, all solder pads are tinned, high strength fireproof and fall proof material, which can be disassembled repeatedly. 4. PCB board design is reasonable, the use of SMD components are commonly used. 5. The left and right three columns of components are used to practice soldering, and each column has test points. 6. The circuit in the middle circle is the water lamp circuit, which is composed of CD4017, NE555 and light-emitting diodes. It can work after soldering. 7. The back of the circuit is also used. There is a ruler, which is convenient for measuring components. There are PCB wire examples to facilitate PCB design and use. 8. The working voltage of the circuit is 3 ~ 12V 9. This kit contains all the components in the following photos. Number of components: 125 Number of solder joints: 274 Solder length: 35cm (diameter: 0.6mm) Sample soldering time: 35 minutes Product description of SMT soldering exercise board Power supply voltage: 5V. The ratio circuit is NE555 + 4017 application circuit, and the multivibrator is composed of NE555. The pulse oscillation signal outputs CD4017 to count through the three pins of NE555. CD4017 will output high level on q0-q4 in turn with the input pulse signal to light up the corresponding light-emitting diodes. These light-emitting diodes are arranged in a circle to form the effect of water lamp. When cd017 counts to 10, the carry end C0 will change from low to high, The driving triode Q1-Q4 is turned on to light up the LED at four corners. When the next pulse comes, the C0 end returns to the low level, and the LED at four corners goes out, and so on. This kit contains 0805 packaged resistor, capacitor, SMD aluminum capacitor, SMD resistor, SMD crystal oscillator, SMD LED lamp, SMD diode, sop14, sop20, tqfp44 and other packaged SMD chips. There are 12 SMD test areas, and the welding difficulty is from low to high. Each group can be tested independently, with short circuit and false soldering test functions, which can judge whether the welding is successful according to the display of LED lamp, There are 12 groups of SMD test areas, which contain 300 SMD welding components in total. Through welding, the welding ability, speed and circuit maintenance ability of various SMD components can be improved to meet the difficulty of the competition. It also has self-test function, and the welding results and welding errors can be seen when the power is on. Principle description: 1. J1 and J2 are the power supply input terminals of the whole chip board, which can work normally when connected with ac6v. When it works normally, all LED lights of the kit can work normally. At first, each group of LED flashes in running water, and then flashes at intervals. Finally, all the LEDs are on, and then flashes. This cycle is used to check whether the LEDs work and whether they are welded well. If the corresponding LED does not flash, it indicates that there is an error or false welding. 2. Ac9v power supply is rectified by D1-D4 diode, and then goes through each filter capacitor to the 1 pin of voltage regulator chip 78m05 (led97 is always on, the rectifier circuit works normally), and outputs DC5V through 3 pins to supply the whole test circuit. 3. The test circuit is controlled by a single chip microcomputer 12 groups of 8-bit LED lamp work. Each group is composed of one 74hc573 and 74HC164. A group can control 8 LEDs, a total of 12 groups. Figure 1 is the control schematic diagram of a group. When it works normally, all the LEDs are on and can flash. Product name patch welding test kit PCB material fr-4pcb board PCB size 146 * 100 mm The color of the board is green and white Product weight 62g Power supply mode DC 9V,Number of solder joints 1079,The number of components is 313. Applicable to junior welding and mounting personnel The component description adopts common chip components Data element list,circuit diagram, principle description ABOUT US We offer the best prices around on high quality products. Our E-store includes media such as books, movies, music and games while offering electronics, toys, sporting apparel, clothing, tools, general home, garden items and more. SHIPPING We are always working hard to ensure your package arrives as soon as possible. Please understand that some factors like weather, high postal traffic, and the performance of shipping companies are outside of our control. We offer free shipping to the lower 48 states and ship within 2 business days of payment, usually sooner. We do not accept P.O. Boxes. Please provide a physical address. For shipping outside of the continental USA, we only use eBays Global Shipping Program.The item is shipped to KY and then sent to the rest of the world. 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Price: 47.5 USD

Location: Miami, Florida

End Time: 2024-08-02T02:01:43.000Z

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