Practical Automatic Dimming Table Lamp: Traditional Chinese Circuit De
In short: Traditional Chinese Practical Automatic dimming table lamp. This entry documents a circuit & prototype taken from Chinese practical-technology literature, written for small-scale makers and home producers. The text below is the full English translation of the original Chinese workshop notes, covering materials and quantities, the step-by-step sequence, and the practical cautions recorded in the source. Roughly 3754 words of English technical text, translated and preserved without editing. It is intended for experimental and reference use, not for regulated or commercial certification.
automatic dimming table lampCommonly used dimming desk lamps have an obvious shortcoming when used for reading and studying. That is, it is difficult to control the brightness, especially for students. Too strong or too weak light will affect vision. This article introduces an automatic dimming desk lamp. It has a photoelectric probe placed near the book, which can automatically adjust the illumination on the book to an appropriate value, which can not only reduce the trouble of manual dimming, but also protect eyesight. At the same time, it has a light stabilizing function, so when the power supply voltage fluctuates, the brightness of the desk lamp remains unchanged. If you want to dim the light like an ordinary dimming desk lamp, you only need to change the distance between the probe and the bulb, which is very effective.Circuit working principle:The circuit is shown in Figure 152. …
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Lei Cheng
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