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به دنیای حرفه و فن خوش آمدید - فتوسل چیست؟
 

فتوسل چیست؟

نوشته شده توسط :انوشه جعفری
چهارشنبه 27 بهمن 1389-01:01 ب.ظ

فتوسل وسیله‌ای است که نسبت به نور حساس بوده و با برخورد شعاعهای نوری با صفحه آن از خود ولتاژی تولید می‌کند و از تولید این ولتاژ می‌توان رله ای را بکار انداخت که مداری را قطع یا وصل کند. طرز کار کلید فتوسل بدین صورت است که وقتی روز است، فتوسل ولتاژی را تولید می‌کند که این ولتاژ تولیدی به رله‌ای فرمان می‌دهد که مدار روشنایی معابر را قطع کند. با تاریک شدن هوا چون نوری وجود ندارد، فتوسل دیگر ولتاژی تولید نمی‌کند و جریانی به رله نمی‌رسد که دستور قطع لامپهای معابر را بدهد، در نتیجه لامپهای معابر روشن می‌شود.

لازم به تذکر است که فتوسل را در مراکز برق نصب می‌کنند و همراه آن یک تقویت کننده وجود دارد که تغییرات جریان در اثر نور تقویت می‌کند و رله بکار می‌اندازد. از فتوسل معمولا برای خاموش و یا روشن کردن اتوماتیک لامپهای معابر ، باغهای بزرگ ، حیاط ویلاها و غیره استفاده می‌شود.





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