Describe the construction of a photodiode with appropriate diagram. What is the minimum frequency (in Hertz) of the photons detectable by a photodiode made of a semiconductor with 2.5 eV bandgap?
A photodiode is a semiconductor optoelectronic device that converts incident light into an electrical signal. It is typically fabricated using a p–n junction or a p–i–n structure made from materials such as silicon, germanium, or gallium arsenide. In construction, a thin p-type layer is formed on an n-type substrate (or vice versa), creating a depletion region at ___ ____ _________ ______ ________ ______ ____ _________ ________.
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What are the advantages of resistance-capacitance (RC) coupling between the two stages of a cascade amplifier?
You want to amplify a triangular wave signal of amplitude and
frequency. Which characteristic of op-amp will be significant in this case? What is its minimum value?
Convert 396010 (decimal) into its hexadecimal equivalent and then divide it by hexadecimal number 0816. Express the result in octal equivalent.
बूलीय नियमों और प्रमेयों का उपयोग करके निम्नलिखित समरूपताओं को सिद्ध करें :
i.
ii.
iii.
iv.
v.
Design and draw a circuit using an op-amp to get at output for input less than
and
at output for input greater than
.
In the universal biasing of a transistor, which resistor acts as a feedback element? How does it provide stability to the circuit?
उपयुक्त आरेख की सहायता से एक फोटोडायोड की संरचना का वर्णन करें। 2.5 eV बैंड अंतराल वाले अर्धचालक से बने फोटोडायोड द्वारा संसूचित किए जा सकने वाले फोटॉनों की न्यूनतम आवृत्ति (हर्ट्ज में) कितनी होगी ?