What are the applications of photodiode?

Here are a few examples of where photodiodes have been used.

• Camera. • Light Meters. • Automatic Shutter Control.
• Medical. • CAT Scanners – X ray Detection. • Pulse Oximeters.
• Safety Equipment. • Smoke Detectors. • Flame Monitors.
• Automotive. • Headlight Dimmer.
• Communications. • Fiber Optic Links.
• Industry. • Bar Code Scanners.

What is the principle of photo detectors?

The working principle of a photodiode is, when a photon of ample energy strikes the diode, it makes a couple of an electron-hole. This mechanism is also called the inner photoelectric effect….Which is better Photodiode or Phototransistor?

Photodiode	Phototransistor
The response time is speed	The response time is slow

What is the working principle of a photodiode?

Principle of Photodiode: It works on the principle of the photoelectric effect. The operating principle of the photodiode is such that when the junction of this two terminal semiconductor device is illuminated then the electric current starts flowing through it.

Which photodiode is commonly used and why?

Although silicon has been the favoured material for photodiodes, germanium can also be used, and its use was first demonstrated in 1962 by Riesz. While PIN photodiode technology has been the most widely used format for diodes, other types including the avalanche diode were also demonstrated.

What are the applications of phototransistor?

Applications of Phototransistors

• Punch-card readers.
• Security systems.
• Encoders – measure speed and direction.
• IR detectors photo.
• electric controls.
• Computer logic circuitry.
• Relays.
• Lighting control (highways etc)

What is photodiode characteristics?

A photodiode is a special type of PN junction diode in the light energy are converted into an electric current or that generate the eclectic current when light exposed known as photodiode, it has also called photo-detector or photo-sensor and light detector. It is design to operate in reverse bias region.

What is the most common used photodiode?

Explanation: Photodiodes are used in consumer electronics devices such as compact disc players, smoke detectors, medical devices and the receivers for infrared remote control devices used to control equipment from televisions to air conditioners. For many applications either photodiodes or photoconductors may be used.

What is the difference between the photodiode and phototransistor in terms of application?

Photodiode is mainly used for the conversion of solar energy into electrical energy but it is also used for sensing light in applications such as optical fiber communication, object counter, etc. Phototransistors are mainly used for detecting light & they find applications in printers, CD-ROM, remotes, relays, etc.

What are the advantages of photodiodes?

Advantages of photodiode :

• The photodiode is linear.
• Low resistance.
• A very good spectral response.
• Better frequency response.
• Low dark current.
• Fastest photodetector.
• Long lifetime.
• Low noise.