Question
Download Solution PDFTV साठी IR रिमोट कंट्रोल्समध्ये किती वारंवारता आणि मोड्यूलेशन वापरले जाते?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFTVसाठी IR रिमोट कंट्रोल्स:
- आजची आधुनिक रिमोट कंट्रोल्स इन्फ्रा-रेड LED मधून आउटपुट मॉड्युलेट करून कार्य करतात.
- सर्किट बोर्डमध्ये कनेक्शन्स जाणून घेण्यासाठी किंवा दाबले जाणारे बटण शोधण्यासाठी सर्किटरी असते आणि मोर्स कोड स्वरूपात सिग्नल तयार करते जे ट्रान्झिस्टरद्वारे वाढवले जाते आणि नंतर IR LED ला दिले जाते.
- पल्स कोड मॉड्युलेशन तंत्र वापरले जाते.
- मॉड्युलेशनचे कारण म्हणजे रिमोट आयआर रेंजला आसपासच्या इतर संस्थांद्वारे उत्सर्जित केलेल्या IR प्रकाशापासून वेगळे करणे.
- वेगवेगळ्या रुंदीच्या डाळींची मालिका एका गेटवर पाठवली जाते जी चालू किंवा बंद होते, मॉड्युलेटर जे सहसा 38 kHz असते.
Last updated on Jun 11, 2025
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