LED चे अग्रगामी व्होल्टेज किती आहे?

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RRB ALP CBT 2 Electronic Mechanic Previous Paper: Held on 23 Jan 2019 Shift 1
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  1. 0.6 Vdc
  2. 1.5 Vdc ते 3 Vdc
  3. 0.3 Vdc
  4. 1.8 Vdc ते 3.3 Vdc

Answer (Detailed Solution Below)

Option 4 : 1.8 Vdc ते 3.3 Vdc
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  • प्रकाश-उत्सर्जक डायोड (LED) हा अर्धसंवाहक प्रकाश स्रोत आहे जो जेव्हा विद्युत प्रवाह वाहतो तेव्हा प्रकाश उत्सर्जित करतो.
  • LED, VF चे फॉरवर्ड व्होल्टेज हे LED चालू होण्यासाठी LED च्या लीड्सवर, एनोडपासून कॅथोडपर्यंत लागू केले जाणे आवश्यक आहे.
  • सामान्यतः, LED चे फॉरवर्ड व्होल्टेज 1.8 आणि 3.3 व्होल्ट्स दरम्यान असते.
  • हे LED च्या रंगानुसार बदलते.
  • लाल LED साधारणपणे 1.7 ते 2.0 व्होल्टच्या आसपास खाली येतो.
  • व्होल्टेज ड्रॉप आणि लाईट फ्रिक्वेन्सी दोन्ही बँड-अंतरासह वाढते.
  • एक निळा LED 3 ते 3.3 व्होल्टच्या आसपास खाली येतो.
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