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A phototransistor differs from a conventional bipolar junction transistor (BJT) primarily in its sensitivity to light. While a BJT relies on electrical current for operation, a phototransistor generates current when exposed to light, allowing it to function as a sensor. This makes phototransistors particularly useful in applications like light detection and optical communication. Additionally, phototransistors typically have lower gain compared to BJTs and are designed to be responsive to specific light wavelengths.
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Is a npn phototransistor normally open or normally closed?
It depends on the phototransistor's design. Most are normally open until you shine light on them.
Why fet is preferred over the bjt?
Disadvantage:Easy to damage when compared to BJT
What is bjt and jfet?
BJT is Bipolar junction transistor FET is Field effect Transistor It is a current controlled device It is voltage controlled device
How works heterojunction bipolar transistor?
The heterojunction bipolar transistor (HBT) is a type of bipolar junction transistor (BJT) which uses differing semiconductor materials for the emitter and base regions, creating a heterojunction. The HBT improves on the BJT in that it can handle signals of very high frequencies, up to several hundred GHz. It is commonly used in modern ultrafast circuits, mostly radio-frequency (RF) systems, and in applications requiring a high power efficiency, such as RF power amplifiers in cellular phones. The idea of employing a heterojunction is as old as the conventional BJT, dating back to a patent from 1951.
Bjt in sine wave oscillator?
it is an oscillator
Is a npn phototransistor normally open or normally closed?
It depends on the phototransistor's design. Most are normally open until you shine light on them.
Give the meaning of L and G in L14G1 phototransistor?
In the designation L14G1 phototransistor, the "L" typically stands for "light," indicating that it is a light-sensitive device. The "G" often represents "germanium" or "glass," referring to the material used in the phototransistor's construction or packaging. The "14" and "1" are likely specific model numbers or series identifiers used by the manufacturer to differentiate this phototransistor from others in their lineup.
How does non conventional sources of energy differ from conventional energy sources?
Only by being unusual or used in an unusual way.
What are the 3 legs of a phototransistor?
Emitter, base & collector.
Why fet is preferred over the bjt?
Disadvantage:Easy to damage when compared to BJT
What are the example current controlled device?
Bipolar junction transistor(BJT)
How can a phototransistor be utilized as a normally open digital input?
A phototransistor can be used as a normally open digital input by connecting it in a circuit where it is exposed to light. When light falls on the phototransistor, it conducts current, effectively closing the circuit and signaling a "high" digital input. Conversely, in the absence of light, the phototransistor remains off, indicating a "low" input. This setup allows for light activation of digital signals in applications like light-sensitive switches or optical sensors.
How does Christian rehab differ from conventional rehabilitation?
Christian rehab differ from conventional rehabilitation because the Christian rehab is more religious or faith based. They help the addict change the addictive behaviors and there is a less chance of a person relapsing when released.
How does conventional photography differ from a modern photography?
Conventional photography uses film while modern photograhp mainly uses digital.
How many terminals does BJT have?
Three.
What is btj transistors?
They are NPN and PNP. BJT mean bipolar junction transistors. there are two P-N junctions in BJT transisters.
Why FET produces less noise than BJT?
because the fet is made out of carbon metal oxide and the bjt is made out of silicon or germanium
