Application of photodiode

Application of photodiode  
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Answer :

1. It is used as light sensor in remote controlled television set. 2. It is used as light sensor in remote controlled air conditioner 3. It is used as object counter to count object, cards etc. 4. It is used as smoke detector. 5. It is used as encoder. 6. It is used as position sensor. 
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Related questions

What is photodiode? Draw the symbol and explain operation of photodiode.

Description : What is photodiode? Draw the symbol and explain operation of photodiode. 

Last Answer : A photodiode is a light detector that converts light into an electrical current. A photodiode is a semi-conductor device, with a p-n junction and an intrinsic layer between p and n layers ... current is independent of reverse bias voltage. Reverse current is mostly depends on the light intensity.

Avalanche photodiode receivers can detect bits of transmitted data by receiving a. 100 photons b. 200 photons c. 2000 photons d. 300 photons

Description : Avalanche photodiode receivers can detect bits of transmitted data by receiving a. 100 photons b. 200 photons c. 2000 photons d. 300 photons

Last Answer : 200 photons

Avalanche photodiode receivers candetect hits of transmitted databy receiving A. 100 photons B. 200 photons C. 300 photons D. 400 photons E. None of the above

Description : Avalanche photodiode receivers candetect hits of transmitted databy receiving A. 100 photons B. 200 photons C. 300 photons D. 400 photons E. None of the above

Last Answer : 200 photons

What type of bias is required for proper operation of a photodiode?

Description : What type of bias is required for proper operation of a photodiode?

Last Answer : Reverse bias.

What is the resistance level of a photodiode in total darkness?

Description : What is the resistance level of a photodiode in total darkness?

Last Answer : Very high.

Will dark current increase or decrease as the temperature of the photodiode increases?

Description : Will dark current increase or decrease as the temperature of the photodiode increases?

Last Answer : Increase.

The range of wavelength values that a given photodiode will respond. ∙ A. spectral response ∙ B. permeance ∙ C. dark current ∙ D. reluctance

Description : The range of wavelength values that a given photodiode will respond. ∙ A. spectral response ∙ B. permeance ∙ C. dark current ∙ D. reluctance

Last Answer : A. spectral response

The leakage current that flows through a photodiode with no light input ∙ A. dark voltage ∙ B. dark impedance ∙ C. dark power ∙ D. dark current

Description : The leakage current that flows through a photodiode with no light input ∙ A. dark voltage ∙ B. dark impedance ∙ C. dark power ∙ D. dark current

Last Answer : D. dark current

Which of the following is the fastest light sensor? ∙ A. PIN photodiode ∙ B. Photovoltaic diode ∙ C. Photodiode ∙ D. Avalanche photodiode

Description : Which of the following is the fastest light sensor? ∙ A. PIN photodiode ∙ B. Photovoltaic diode ∙ C. Photodiode ∙ D. Avalanche photodiode

Last Answer : Avalanche photodiode

Which of the following is the fastest light sensor? ∙ A. PIN photodiode ∙ B. Photovoltaic diode ∙ C. Photodiode ∙ D. Avalanche photodiode

Description : Which of the following is the fastest light sensor? ∙ A. PIN photodiode ∙ B. Photovoltaic diode ∙ C. Photodiode ∙ D. Avalanche photodiode

Last Answer : D. Avalanche photodiode

Which of the following is the fastest light sensor ∙ a. PIN photodiode ∙ b. Photovoltaic diode ∙ c. Phototransistor ∙ d. Avalanche photodiode

Description : Which of the following is the fastest light sensor ∙ a. PIN photodiode ∙ b. Photovoltaic diode ∙ c. Phototransistor ∙ d. Avalanche photodiode

Last Answer : ∙ d. Avalanche photodiode

Which of the following is NOT a common light detector ∙ a. PIN photodiode ∙ b. Photovoltaic diode ∙ c. Photodiode ∙ d. Avalanche photodiode

Description : Which of the following is NOT a common light detector ∙ a. PIN photodiode ∙ b. Photovoltaic diode ∙ c. Photodiode ∙ d. Avalanche photodiode

Last Answer : ∙ b. Photovoltaic diode

APD stands for: a. Avalanche Photodiode b. Advanced Photodiode c. Avalanche Photo Detector d. Advanced Photo Detector

Description : APD stands for: a. Avalanche Photodiode b. Advanced Photodiode c. Avalanche Photo Detector d. Advanced Photo Detector

Last Answer : a. Avalanche Photodiode

The range of wavelength values that a given photodiode will respond.

Description : The range of wavelength values that a given photodiode will respond.

Last Answer : spectral response

A photodiode can switch its current ON or OFF in (a) nano second (b) milli second (c) micro second (d) centi second

Description : A photodiode can switch its current ON or OFF in (a) nano second (b) milli second (c) micro second (d) centi second

Last Answer : (a) nano second

A sensor which changes light intensity into electric voltage. (a) LDR (b) thermistor (c) photodiode (d) photovoltaic

Description : A sensor which changes light intensity into electric voltage. (a) LDR (b) thermistor (c) photodiode (d) photovoltaic

Last Answer : (a) LDR

Write working principle of photodiode and state its two applications.

Description : Write working principle of photodiode and state its two applications.

Last Answer : Working principle of photodiode:   Working principle: A photodiode is a PN- junction diode that consumes light energy to produce electric current. Sometimes it is also called as photo- ... Optical remote control Smoke detectors Flame detectors Intruder alert security system 

Describe the operating principle of photodiode with sketch

Description : Describe the operating principle of photodiode with sketch

Last Answer : Operating principle of photodiode: A photodiode is a PN junction or PIN structure. When a photon of sufficient energy strikes the diode, it excites an electron, thereby creating a mobile electron ... ) along its direction while the photocurrent remains virtually the same. Diagram optional:  

Write two applications of i) LED ii) photodiode.

Description : Write two applications of i) LED ii) photodiode.

Last Answer : LED:   1. In the opto- couplers.  2. In the infrared remote controls.  3. As indicators in various electronic circuits.  4. In seven segment and alphanumeric displays.  5. In optical switching ... As photo (light) detector.  5. In light intensity meters.  6. In the object counting system. 

Draw the construction of Avalanche photodiode. State its working principle.

Description : Draw the construction of Avalanche photodiode. State its working principle.

Last Answer : Avalanche photodiode are used to obtain the large gain, i.e. large output because Conventional photodiodes and PIN photodiodes obtain the limited gain. CONSTRUCTION: APD's are usually variation ... in avalanche with the number of carriers growing exponentially as the process continues.  

Draw the symbol of photodiode.

Description : Draw the symbol of photodiode.

Last Answer : Symbol of photodiode.

Describe the working principle of photodiode with proper diagram.

Description : Describe the working principle of photodiode with proper diagram.

Last Answer : Diagram of photo diode : Working principle of photo diode :  When photons of energy greater than 1.1 eV hit the diode, electron-hole pairs are created. The intensity of photon ... , the holes move toward the anode and the electrons move toward the cathode, thereby producing photocurrent. 

Draw the symbol of LED & photodiode.

Description : Draw the symbol of LED & photodiode. 

Last Answer : Symbol of LED & photodiode

When the light falling on a photodiode increases, the reverse minority current

Last Answer : When the light falling on a photodiode increases, the reverse minority current increases.