3 thoughts on “Why did the holiday light lanterns flash? What principle?”
Kent
1. The small color lamps are connected in series. However, the structure of the internal filament inside the color lamp is different from the average lamp. There is a section of fine metal wire painted with copper oxide under the color lamp filament. Once there is a color lamp filament melting, the other colored lights will be extinguished instantly, so that the voltage at both ends of the bulb will get 220V, which instantly penetrates the copper coating of the fine metal wire, so that the color lamp will form the color lamp to form a re -formation The channels make other light bulbs continue to work. This is the small colored lanterns in series, why some of the filaments are melted, and the others can continue to work. 2, some colored lights can flash because a "bubble" is connected in series in the circuit. The structure of the bubble is composed of two parts of the filament. On the one hand, there is an inverted L -shaped lead, and on the other side is the filament with dual metal pieces in the head section. The two are usually exposed to. After power is powered, due to the glowing of the filament, the dual metal sheet is heated and transformed, and the circuit will be cut off when it leaves the original position. This is the same reason why some color lamps are flickering, and some do not flash. Pucting information: Pevy after the founding of New China, color lamp art has developed greater development, especially with the development of my country's science and technology, color lantern art is renovated, the tricks are frequent, traditional traditions, traditional traditions, traditions The lighting process is closely combined with modern science and technology to use new technologies and new technologies such as electronics, construction, machinery, remote control, acoustic fiber and other new technologies for color lamp design. The unity of ideology, knowledge, fun, and artistic, the ancient art of Zigong Lantern Festival is more colorful. With the development and change of society, the Zigong Lantern Festival has gradually become superb and skilled under the birth and nourishment of national culture. In 1964, the Zigong Municipal People's Government organized the first lantern festival since the founding of New China. From then on, the scale of the lantern festival has changed from small to large, the craftsmanship has been rough to fine, the lamps have developed from individuals to groups, from non -movement to linkage, and the layout has developed from graphic to three -dimensional. By 2005, the 11th Zigong International Dinosaur Lantern Festival has been successfully held locally, and was invited to exhibit with Beijing, Guangzhou, Wuhan, Shanghai, Hong Kong, Thailand, and Singapore.
Because the color lamp is filled with a large amount of nitrogen and fluoride, a chemical reaction will occur when encountering high temperature! The corresponding elements will correspond to the corresponding color!
The general lights are different.
The bubbles have a resistor in addition to the filaments in addition to the two lamps. The resistance value of this resistor is much greater than the resistance of the filament. Therefore, when the lights are glowing, most of the current is through the filament, and only a small amount of current passes through the resistance, so the small light bulbs shine normally. When the filament is burned, the current is all through the resistance, and the voltage on the resistance will greatly increase, so that the voltage on the other lamps will be reduced, so other light bulbs become darker than the original, but they are all bright. The two feet under the filaments of the color lamps are connected in parallel to the measuring section of metal wires to ensure that the current can flow from the metal wire after the filament of the bulb is broken, so that the other colorful lanterns will continue to shine. And it cannot glow itself. but sometimes the individual lights seen by it are broken, and the others seem to be brighter! This is because the surface of the filament is plated by copper oxide. If the bubbles are broken, it will instantly break the copper oxide, short -circuit this light bulb, and other light bulbs can work normally, and each bubble will be brighter than before, because the voltage changes because the voltage changes, because the voltage changes, because the voltage changes, because the voltage changes, because the voltage changes, because the voltage changes Large, the resistance is unchanged, so the power is greater. It is worth noting here, it is every small bulb to light up instead of the entire string of lights. The total resistance is smaller. Why are it darker and brighter? The key is whether the filament is short -circuit or a disconnection! The short circuit is brighter and the road is darker.
The connection method of holiday small colored lamps
This target:
1. Student independent design improves the internal structure of small colored lamps, making it more practical and more beautiful, improve students 'innovation of students' innovation Capability;
2, the connection method of the small color lights initially experience the "black box method".
3.
The teaching points, difficulty points:
The points: The connection method of small colored lamps
Difficulty point: Study the connection method of actual small lanterns r
The teaching equipment: small colored lamps, power supply, wires, switches
Teaching process:
The voltage of the color lamp is 10V when working normally. In order to access the lighting circuit, it can work normally. Should a string of colored lamps be connected in series by small colored lights? How should they connect to the 44 small color lamps after the lighting can be connected?
The introduction: connecting the "Star" holiday small color lamp, evoking students' explore interest
asked questions: Is the small color lanterns really connected in series? Why did you just see that only one lamp was not turned on, but other lights still glowed? Is this not contradictory with the work characteristics of the series circuit? Why does the small color lanterns flash and shine intermittently?
The student design scheme and draw circuit diagram.
The representative solutions to communicate, and require students to explain the principles or ideas of design.
The advantages and disadvantages of the discussion scheme, and select one or two solutions to connect.
The advantages and disadvantages of the analysis scheme through experiments.
The teacher provides a actual small color lamp, allowing students to study according to the following steps:
1. First study the internal structure of a small color lamp.
2, study the connection method of a string of small colored lamps.
3. According to the connection method of the actual small lamp, the filament of one or several small colored lanterns is broken, and the other small lanterns do not go out.
4. What are the differences between your own solution and the actual connection scheme and the advantages and disadvantages.
In the problem with the problem: take the time to observe the small lanterns in front of the city in the city, some small colored lights can be turned on and shining, please think about how they connect?
(Data 🙂 The internal structure of the holiday small lamp is different from the general light. In addition to the filament of each lamp, there is also a resistor between two lights between two lamps. The resistance of this resistor is much greater than the resistance of the filament. Therefore, when the lights are glowing, most of the current is through the filament, and only a small amount of current passes through the resistance, so the small light bulbs shine normally. When the filament is burned, the current is all through the resistance, and the voltage on the resistance will greatly increase, so that the voltage on the other lights will be reduced, so other lights become darker than the original.
1. The small color lamps are connected in series. However, the structure of the internal filament inside the color lamp is different from the average lamp. There is a section of fine metal wire painted with copper oxide under the color lamp filament.
Once there is a color lamp filament melting, the other colored lights will be extinguished instantly, so that the voltage at both ends of the bulb will get 220V, which instantly penetrates the copper coating of the fine metal wire, so that the color lamp will form the color lamp to form a re -formation The channels make other light bulbs continue to work. This is the small colored lanterns in series, why some of the filaments are melted, and the others can continue to work.
2, some colored lights can flash because a "bubble" is connected in series in the circuit. The structure of the bubble is composed of two parts of the filament. On the one hand, there is an inverted L -shaped lead, and on the other side is the filament with dual metal pieces in the head section. The two are usually exposed to.
After power is powered, due to the glowing of the filament, the dual metal sheet is heated and transformed, and the circuit will be cut off when it leaves the original position. This is the same reason why some color lamps are flickering, and some do not flash.
Pucting information:
Pevy after the founding of New China, color lamp art has developed greater development, especially with the development of my country's science and technology, color lantern art is renovated, the tricks are frequent, traditional traditions, traditional traditions, traditions The lighting process is closely combined with modern science and technology to use new technologies and new technologies such as electronics, construction, machinery, remote control, acoustic fiber and other new technologies for color lamp design. The unity of ideology, knowledge, fun, and artistic, the ancient art of Zigong Lantern Festival is more colorful.
With the development and change of society, the Zigong Lantern Festival has gradually become superb and skilled under the birth and nourishment of national culture. In 1964, the Zigong Municipal People's Government organized the first lantern festival since the founding of New China. From then on, the scale of the lantern festival has changed from small to large, the craftsmanship has been rough to fine, the lamps have developed from individuals to groups, from non -movement to linkage, and the layout has developed from graphic to three -dimensional.
By 2005, the 11th Zigong International Dinosaur Lantern Festival has been successfully held locally, and was invited to exhibit with Beijing, Guangzhou, Wuhan, Shanghai, Hong Kong, Thailand, and Singapore.
Because the color lamp is filled with a large amount of nitrogen and fluoride, a chemical reaction will occur when encountering high temperature! The corresponding elements will correspond to the corresponding color!
The general lights are different.
The bubbles have a resistor in addition to the filaments in addition to the two lamps. The resistance value of this resistor is much greater than the resistance of the filament. Therefore, when the lights are glowing, most of the current is through the filament, and only a small amount of current passes through the resistance, so the small light bulbs shine normally. When the filament is burned, the current is all through the resistance, and the voltage on the resistance will greatly increase, so that the voltage on the other lamps will be reduced, so other light bulbs become darker than the original, but they are all bright.
The two feet under the filaments of the color lamps are connected in parallel to the measuring section of metal wires to ensure that the current can flow from the metal wire after the filament of the bulb is broken, so that the other colorful lanterns will continue to shine. And it cannot glow itself.
but sometimes the individual lights seen by it are broken, and the others seem to be brighter!
This is because the surface of the filament is plated by copper oxide. If the bubbles are broken, it will instantly break the copper oxide, short -circuit this light bulb, and other light bulbs can work normally, and each bubble will be brighter than before, because the voltage changes because the voltage changes, because the voltage changes, because the voltage changes, because the voltage changes, because the voltage changes, because the voltage changes Large, the resistance is unchanged, so the power is greater. It is worth noting here, it is every small bulb to light up instead of the entire string of lights. The total resistance is smaller.
Why are it darker and brighter? The key is whether the filament is short -circuit or a disconnection! The short circuit is brighter and the road is darker.
The connection method of holiday small colored lamps
This target:
1. Student independent design improves the internal structure of small colored lamps, making it more practical and more beautiful, improve students 'innovation of students' innovation Capability;
2, the connection method of the small color lights initially experience the "black box method".
3.
The teaching points, difficulty points:
The points: The connection method of small colored lamps
Difficulty point: Study the connection method of actual small lanterns r
The teaching equipment: small colored lamps, power supply, wires, switches
Teaching process:
The voltage of the color lamp is 10V when working normally. In order to access the lighting circuit, it can work normally. Should a string of colored lamps be connected in series by small colored lights? How should they connect to the 44 small color lamps after the lighting can be connected?
The introduction: connecting the "Star" holiday small color lamp, evoking students' explore interest
asked questions: Is the small color lanterns really connected in series? Why did you just see that only one lamp was not turned on, but other lights still glowed? Is this not contradictory with the work characteristics of the series circuit? Why does the small color lanterns flash and shine intermittently?
The student design scheme and draw circuit diagram.
The representative solutions to communicate, and require students to explain the principles or ideas of design.
The advantages and disadvantages of the discussion scheme, and select one or two solutions to connect.
The advantages and disadvantages of the analysis scheme through experiments.
The teacher provides a actual small color lamp, allowing students to study according to the following steps:
1. First study the internal structure of a small color lamp.
2, study the connection method of a string of small colored lamps.
3. According to the connection method of the actual small lamp, the filament of one or several small colored lanterns is broken, and the other small lanterns do not go out.
4. What are the differences between your own solution and the actual connection scheme and the advantages and disadvantages.
In the problem with the problem: take the time to observe the small lanterns in front of the city in the city, some small colored lights can be turned on and shining, please think about how they connect?
(Data 🙂 The internal structure of the holiday small lamp is different from the general light. In addition to the filament of each lamp, there is also a resistor between two lights between two lamps. The resistance of this resistor is much greater than the resistance of the filament. Therefore, when the lights are glowing, most of the current is through the filament, and only a small amount of current passes through the resistance, so the small light bulbs shine normally. When the filament is burned, the current is all through the resistance, and the voltage on the resistance will greatly increase, so that the voltage on the other lights will be reduced, so other lights become darker than the original.