जैसे-जैसे रंग बदलता है, अग्र वोल्टेज ______ में बदलता रहता है।

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RRB ALP Electronics Mechanic 23 Jan 2019 Official Paper (Shift 2)
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  1. LED
  2. LCD TV
  3. रंगीन TV
  4. LED TV

Answer (Detailed Solution Below)

Option 1 : LED
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  • एक प्रकाश उत्सर्जक डायोड (LED) एक अर्धचालक उपकरण है जो इसके माध्यम से प्रवाहित होने पर प्रकाश का उत्सर्जन करता है।
  • जैसे-जैसे रंग बदलता है, अग्र वोल्टेज LED में बदलता रहता है।
  • आमतौर पर, एक LED का अग्र वोल्टेज 1.8 और 3.3 वोल्ट के बीच होता है।
  • "सफ़ेद" LED में उच्च वोल्टेज होता है, आमतौर पर 3.2 - 3.6V।

उनके रंग और वोल्टेज पात के साथ विभिन्न LED इस प्रकार हैं:

 

अर्धचालक सामग्री तरंगदैर्ध्य रंग वोल्टेज पात (अग्रगामी)
GaAs 850 - 940 nm अवरक्त > 1.9 V
GaAsP 630 - 660 nm लाल 1.8 V
GaAsP 605 - 620 nm ऐंबर 2.05 V
GaAsP:N 585 - 595 nm पीला 2.15 V
AlGaP 550 - 570 nm हरा 2.2 V
SiC 430 - 505 nm नीला 2.6 V
GaInN 450 nm सफ़ेद 3.5 V

 

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