Podazz Soldering Practice SMD SMT Kit Welding Skill Training Board DIY
Podazz Soldering Practice SMD SMT Kit Welding Skill Training Board DIY
- 【120 SMD Components】You can try a variety of welding soldering technology, and can help you improve your welding skills
- 【High Quality Material】High-quality double-sided spray tin FR-4 circuit board, easy to solder, not easy to oxidize, contribute to success
- 【Good Quality PCB】The PCB clearly marked electronic components, mm/in scale on the back of the PCB board, convenient for measuring components, and line width examples are also marked, which can be used as a reference for designing PCB
- 【Easy to Assemble and Solder】It can be widely used in personal hobbies, school electronic projects, mobile phone training, confidential electronic equipment repair personnel, electronic competitions, etc
- 【Beautiful Water Lamp Circuit】It is made of CD4017, NE555 and leds, which can be used to work after being welded, it can be preserved as an ornament, used to decorate Christmas tree, bookshelf, door, Christmas decoration, desktop decoration and so on
| Brand: | Podazz |
|---|---|
| Manufacturer: | podazz |
| Part Number: | 7VM4ZD2 |
| Isin: | IAA357FLAMMI |
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Supply voltage: 5V
This is the NE555+4017 application circuit. The NE555 forms a multivibrator. The pulse oscillation signal is output through the 3rd pin of NE555 to count the CD4017. CD4017 will output high level on Q0-Q4 in turn with the input pulse signal, lighting up the corresponding LEDs. These LEDs are arranged in a circle to form the effect of running lights.
When CD017 counts to 10, the carry end CO changes from low to high to drive the transistor Q1-04 to turn on, thereby lighting up the LEDs in the four corners. After the next pulse arrives, the CO end returns to a low level, and the LEDs in the four corners go out, and so on.
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