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The Tesla coil is a kind of transformer (resonant transformer) that operates based on the principle of resonance. It was invented by Nikola Tesla, a Serbian-American scientist, in 1891. It is mainly used to generate alternating current electricity with extremely high voltage but low current and high frequency.
The Tesla coil consists of two sets (sometimes three sets) of coupled resonant circuits. The Tesla coil is difficult to define precisely as Nikola Tesla experimented with a large number of different configurations of coils. Tesla carried out innovative experiments with these coils, such as in electrical lighting, fluorescence spectroscopy, X-rays, high-frequency alternating current phenomena, electrotherapy and wireless power transmission, as well as the transmission and reception of radio signals.
1、PCB board size: 40×31 mm
2、PCB board thickness: 1.6 mm
3、Board material: It is made of international standard sheet materials. All the pads are tin-plated and it is of high-strength material.
4、Circuit working voltage: DC 4 - 6V
5、Number of components: 17
6、Number of solder joints: 18
7、Function/feature: Wireless transmission to light up LEDs.
8、Sample welding time: Approximately 35 minutes.
The lucky turntable is a tool for predicting in advance which position the rotating disc will stop at when it comes to a halt. It can also be used in number-guessing games, electronic dice, lottery machines and so on. The electronic lucky turntable achieves the same functions in an electronic way. In this kit, 10 LEDs are arranged in a circle. When the button is pressed, each LED will light up in turn. At the beginning, the flowing speed is very fast, making it seem that all the LEDs are blinking together. Then the flowing speed will become slower and slower until it finally stops on a certain LED and no longer moves. If the last lit LED is the same as what the player has predicted, it means that the player has "won the prize".
1、PCB board size: 58×58 mm
2、PCB board thickness: 1.6 mm
3、Board material: It is made of international standard sheet materials. All the pads are tin-plated and it is of high-strength material.
4、Circuit working voltage: DC 3.5 - 6V
5、Number of components: 21
6、Number of solder joints: 61
7、Function/feature: NE555 + CD4047 lucky turntable
8、Sample welding time: Approximately 20 minutes.
This doorbell PCB board is elaborately designed and manufactured, possessing outstanding performance. Its layout is reasonable and the components are welded firmly, which can ensure long-term and stable operation. It can be perfectly adapted to both households and small office spaces, providing you with convenient doorbell functions.When it comes to installation, our doorbell PCB board is very convenient. It features a simple and clear circuit design, enabling even non-professionals to complete the installation with ease. What's more, it is compatible with multiple types of doorbell buttons and sound-emitting devices, allowing you to freely match them according to your preferences and create a personalized doorbell system.In terms of quality, we have strict supervision. Each PCB board is made of high-quality materials. Choosing our doorbell PCB board means choosing peace of mind and convenience. Let every doorbell ring be clear and pleasant, bringing more comfortable experiences to your life and work.
1、PCB board size: 43×35 mm
2、PCB board thickness: 1.6 mm
3、Board material: It is made of international standard sheet materials. All the pads are tin-plated and it is of high-strength material.
4、Circuit working voltage: DC 4 - 7V
5、Number of components: 18
6、Number of solder joints: 40
7、Function/feature: NE555 doorbell function
8、Sample welding time: Approximately 25 minutes.
This kit is mainly composed of a clock generation circuit and a decimal counter circuit. It consists of a self-excited multivibrator with the NE555 as the core. The power supply charges the capacitor C1 through resistors R2, R3 and R4. When C1 just starts to be charged, pin 2 of the NE555 is still at a low level, so pin 3 (the output terminal) is at a high level. When the power supply charges C1 through R2, R3 and R4 to two-thirds of the power supply voltage, the level of pin 3 of the output terminal changes from high to low, and the internal discharge tube of the NE555 turns on. Then the capacitor C1 discharges through R4, R3 and pin 7 of the NE555. Until the voltage across C1 is lower than one-third of the power supply voltage, the level of pin 3 of the NE555 changes from low level to high level again, and C1 is charged again. In this way, oscillation is formed in a cycle. The charging time is 0.695×(R2 + R3 + R4)×C1, and the discharging time is 0.695×(R4 + R3)×C1. Adjusting R4 can control the output frequency of the oscillator. The clock oscillation signal of the NE555 is continuously applied to pin 14 of the CD4017. There are 10 LEDs connected to the 10 output terminals of the CD4017. When the 10 output terminals of the CD4017 alternately generate high levels under the action of the clock signal, D1 - D10 are lit up in turn, thus forming a flowing light effect. Adjusting R4 can adjust the flowing speed of the LEDs.
1丶PCB board size: 73×32 mm
2丶PCB board thickness: 1.6 mm
3丶Board material: It is made of international standard sheet materials. All the pads are tin-plated and it is of high-strength material.
4丶Circuit working voltage: DC 3 - 5V
5丶Number of components: 29
6丶Number of solder joints: 79
7丶Function/feature: NE555 + CD4017 with adjustable frequency
8丶Sample welding time: Approximately 25 minutes.
The circuit uses sound to control 11 LEDs to light up in a flowing manner, which is suitable for assembly practice, skill training, assembly competitions and so on. This kit can display the functions of CD4017 in a very intuitive way and is a kit for learning about counters, frequency dividers and color lamp controllers. Meanwhile, this kit has excellent effects, is full of interest and practicality, and is also the preferred material for beginners to get started. Q1 and its peripheral circuits form a simple amplification circuit. The MIC converts sound signals into electrical signals, which are then coupled to Q1 through C3 for amplification. A voltage signal with high and low changes is formed at the collector of Q1. The voltage with sufficient amplitude is sent to the counting input terminal (pin 14) of CD4017. Every time a pulse arrives, the high level output from Q0 - Q9 of the counter shifts by one position in sequence, lighting up the corresponding light-emitting diodes and thus creating a flowing effect. Among them, L11 is connected to the counting output terminal C0 of 4017. When L1 - L5 are lit, the C0 terminal of 4017 outputs a high level and lights up L11. When L6 - L10 are lit, the C0 terminal outputs a low level and L11 is not lit. If you think L11 affects the aesthetics, it can also be installed without affecting the operation of the circuit at all.
1丶PCB board size: 64×26 mm
2丶PCB board thickness: 1.6 mm
3丶Board material: It is made of international standard sheet materials. All the pads are tin-plated and it is of high-strength material.
4丶Circuit working voltage: DC 4 - 12V
5丶Number of components: 24
6丶Number of solder joints: 48
7丶Function/feature: CD4017 sound sensor RGB LED
8丶Sample welding time: Approximately 20 minutes.
Connor
Reviewed in the United States on February 19, 2025
The features of this kit are too outstanding! The voltage parameters on the manual are clear at a glance, and the component details are so detailed that it is astonishing. Even the most inconspicuous small components have corresponding introductions. The quality of the components is extremely high, impeccable in both appearance and performance. During the production process, I was able to easily solder them onto the circuit board, and the whole process was full of fun. The finished product is not only beautiful, but also works normally and stably. It's really great! Surprises keep coming after purchasing! The instruction manual is clear as if guided by a teacher, and the high quality of the components is reassuring. The production process is full of challenges and fun, with just the right level of difficulty. The finished product has an exquisite appearance and incredibly powerful functions, surpassing many other kits on the market. Highly recommended!
Alicia1
Reviewed in the United States on February 19, 2025
This electronic production kit gave me an unforgettable experience. The detailed and accurate introduction of voltage and component details in the manual gave me a clear understanding of the entire process before production. The components in the kit are of high quality, with a good soldering feel and are not easily damaged. The production process is full of challenges and fun, with moderate difficulty, which can exercise my hands-on ability. The finished product has an excellent effect, both in appearance and functionality, which makes me very satisfied. It is worth recommending!
Joseph Lorenzo
Reviewed in the United States on February 19, 2025
After purchasing this kit, I deeply experienced its unique charm. The clear and concise explanation of voltage and component details in the manual allowed me to make sufficient preparations before production. The quality of the components is excellent, impeccable in both appearance and performance. During the welding process, I found that these components have good compatibility and can be perfectly integrated with the circuit board. The finished product has a great effect, not only is it beautiful in appearance, but it also has powerful functions. I strongly recommend it to everyone!
Mark
Reviewed in the United States on February 19, 2025
I am a fan of electronic kits and also a teacher. I bought this kit for my students and they really like it. The difficulty of making these kits ranges from simple to difficult, and I think it's very good. It has taught my students a lot and improved their welding skills a lot. I am proud of them! I recommend everyone to try these kits, they are really useful and helpful in improving their skills. The prices are also very affordable. I highly recommend them!
Evelyn d.
Reviewed in the United States on February 19, 2025
I have bought many electronic kits, and this one really stands out. The manual is detailed and meticulous, presenting each component parameter and connection method clearly. The component quality is excellent and the welding is smooth. The production process is full of fun and the difficulty is just right, which will not make people hesitate. The finished product has an exquisite appearance, resembling a work of art, with powerful functions that far exceed similar products. Highly recommended!
Shermworms
Reviewed in the United States on August 29, 2024
I was only able to fully complete 1 of the kits due to broken or missing pieces. I was missing a few resistors, one of the battery packs, and a few capacitors. The instructions weren't possible without consulting with my friend who is an electrical engineer. For a beginner's kit... the instructions should be usable without external help.
Andrew
Reviewed in the United States on November 22, 2024
Ordered a few months ago and just finally getting a chance to do some of the projects. I liked that the parts for each kit were separated into individual bags with their component sheets. Only two real complaints. First, it was missing one of the four battery packs, but I just made two of the boards quick connects to so I can swap a pack between them. The other is i wasn’t sure how to orient the triode on one of the projects and when I looked up the specs i thought I had it right but didn’t. Either a better explanation on orientation on the pcb or what the triode legs are might be beneficial.
Curtis
Reviewed in the United States on August 20, 2023
Lots of LEDS that don't work. Tesla coil did not work. Not worth the money and wait.
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