Practical Air Freshener: Traditional Chinese Circuit Design Guide
In short: Traditional Chinese Practical Air freshener. 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 3020 words of English technical text, translated and preserved without editing. It is intended for experimental and reference use, not for regulated or commercial certification.
air freshenerCircuit principle:The principle circuit diagram is shown in Figure 215. AC 220V is stepped down to 12V by T1, rectified by full-bridge CL, filtered by C6 and input into the three-terminal voltage regulator 7812, which outputs a stable DC of 12V. The main purpose of using IC1 here is to provide a stable DC power supply to the light control circuit, thereby improving the stability of the light control circuit. At the same time, IC1 has an overvoltage and overcurrent protection circuit inside to prevent subsequent circuits from being affected by grid voltage fluctuations. The light-controlled switch circuit is composed of TWH8778, RP, RG, and C3. During the day, sunlight shines on the photoresistor RG. Its resistance value is ≤5K so that the potential of the ⑤ pin of IC3 …
Sign in to unlock
One-time payment per article, billed in credits (1 $ = 100 credits). You will review the invoice and the non-refundable digital-asset policy before anything is charged. The PDF is generated on demand and embeds a licensing watermark.
Unlock this article
One-time payment · permanent access after unlock · 1 $ = 100 credits
Member level pricing for this article
| Level | Cumulative top-up | Discount | Your price | You save |
|---|---|---|---|---|
| Free | Free | — | 4,966 credits | — |
| Bronze | $100.00+ | 2% off | 4,867 credits | 99 credits |
| Silver | $1,000.00+ | 5% off | 4,718 credits | 248 credits |
| Gold | $5,000.00+ | 10% off | 4,469 credits | 497 credits |
| VIP | $20,000.00+ | 15% off | 4,221 credits | 745 credits |
Prices are billed in credits (1 $ = 100 credits). Your level upgrades automatically as your cumulative top-up grows. Top up to unlock a higher discount ›
All articles are digital assets. Once a PDF is downloaded, the purchase is final and non-refundable.
Please log in to unlock this article.
Payment Methods
pay@viprole.com
Lei Cheng
pay@viprole.com
Lei Cheng